Fields of Mistria Universal Gifts Guide: The Best Items for Every Villager

Learn how to use fields of mistria universal gifts and neutral items to build relationships with romanceable and non-romanceable villagers.

Building lasting relationships with the local villagers is a key component of your daily life in Mistria, making it vital to understand how gifting works. Finding the right items for each neighbor can be a challenge, which is why utilizing fields of mistria universal gifts is a great way to streamline your daily routine. By identifying items that are generally liked or received neutrally by the townspeople, you can efficiently raise your heart levels without cluttering your inventory. In this guide, we will break down the mechanics of fields of mistria universal gifts, highlight high-value items that appeal to multiple characters, and outline the specific preferences of every resident.

How Gifting Mechanics Work in Fields of Mistria

Building up your relationships in Mistria requires consistent interaction with the town's residents. You can talk to each NPC once per day for a small boost in friendship. To speed up the process, you can also give them a gift once a day.

If you manage to give a villager a gift they love or like on their birthday, you will receive a massive relationship bonus. This makes tracking birthdays and saving high-value items incredibly rewarding.

Gifts in the game fall into several distinct categories:

Loved: These are highly specific items that yield the maximum possible relationship points.
Liked: These are favored items that provide a solid boost to your heart levels.
Neutral: Items that do not trigger a unique reaction but still provide a safe, minor friendship boost.
Disliked: Items that trigger a disappointed reaction and yield fewer relationship points.
Hated: Items that trigger a unique line of negative dialogue and set back your relationship progress.
Banned: Items that are inappropriate or dangerous for a specific character. The game mechanics will prevent you from giving these items to them entirely.

Understanding Universal and Neutral Gift Categories

While many farming simulators feature items that every character loves, Mistria handles things a bit differently. There is no single item that acts as a perfect loved gift for all 30+ characters. Instead, players looking for fields of mistria universal gifts must rely on neutral items or target broad categories.

Neutral gifts are any items that do not explicitly fall into a character's loved, liked, disliked, hated, or banned lists. These items are safe to give to almost anyone. However, you must avoid categories that are universally disliked by the majority of the town.

Disliked Category	Example Items	General Rule
Junk	Fiber, Clay, Sap, Sod, Glass, Wood, Stone, Coral, Hay	Disliked or hated by almost every NPC.
Bugs	Butterflies, Beetles, Cicadas, Moths, Ants	Disliked by most, though Luc is a notable exception who loves them.
Weird Gifts	Heart-shaped animal treats	Disliked by almost all human villagers.
Fish	Cod, Salmon, Sardines, Mackerel	Disliked by many, though Terithia likes and loves fish dishes.

Safe Near-Universal Likes and Loves

To save inventory space while making your daily rounds, you should focus on items that are loved or liked by a large number of characters. Stockpiling these highly effective fields of mistria universal gifts allows you to carry just a few stacks of items to satisfy a major portion of the town.

Specifically, sweet baked goods, high-quality gems, and caffeinated drinks are highly valued by many residents.

High-Value Gift	Characters Who Love It	Characters Who Like It
Golden Cookies	Balor, Darcy, Dell, Eiland, Juniper, Landen, Ryis, Wheedle	Caldarus, Maple, Taliferro
Golden Cheesecake	Eiland, Landen, Ryis, Wheedle	Balor, Caldarus, Darcy, Taliferro
Coffee	Adeline	Hayden, Hemlock, Holt, Nora, Olric, Reina, Ryis, Seridia, Stillwell, Taliferro, Valen, Vera, Wheedle, Zorel
Perfect Diamond	Balor, Elsie, Merri, Olric, Wheedle	(Neutral for most others)
Perfect Pink Diamond	Adeline, Balor, Merri, Olric, Wheedle	(Neutral for most others)
Sushi Platter	Caldarus, March, Reina, Taliferro, Terithia, Valen	(Neutral for most others)

Gift Preferences for Dateable Characters

If you want to pursue a romance in Mistria, you should aim to give your chosen partner their preferred loved items whenever possible, instead of relying solely on fields of mistria universal gifts.

Below is a complete reference table for the loved and liked gifts of all 12 romanceable characters.

Character	Loved Gifts	Liked Gifts
Adeline	Coffee, Gazpacho, Lemon Pie, Middlemist, Mistril Ingot, Peaches and Cream, Perfect Pink Diamond, Plum Blossom, Pumpkin Pie	Cup of Tea, Candied Lemon Peel, Ore Diamond
Balor	Alda Gem Bracelet, Apple Honey Curry, Chili Coconut Curry, Deluxe Curry, Family Crest Pendant, Perfect Diamond, Perfect Emerald, Perfect Pink Diamond, Perfect Ruby, Perfect Sapphire	Cauliflower Curry, Chickpea Curry, Crystal Rose, Ore Diamond, Ore Emerald, Fog Orchid, Frost Lily, Gold Ingot, Ore Gold, Golden Cookies, Golden Cheesecake, Jasmine, Perfect Gold Ore, Ore Pink Diamond, Rose, Ore Ruby, Rusted Treasure Chest, Ore Sapphire, Sapphire Betta, Snowdrop Anemone
Caldarus	Apple Honey Curry, Fried Rice, Harvest Plate, Mont Blanc, Seafood Boil, Seafood Snow Pea Noodles, Spring Galette, Statuette of Caldarus, Sushi Platter, Veggie Sub Sandwich	Beet Soup, Breath of Fire, Chili Coconut Curry, Caldosian Chocolate Cake, Crab Cakes, Fish Tacos, Golden Cheesecake, Golden Cookies, Ice Cream Sundae, Incredibly Hot Pot, Lobster Roll, Marigold, Mushroom Steak Dinner, Perch Risotto, Spirit Mushroom Tea, Pumpkin Pie, Sea Bream Rice, Spell Fruit Parfait, Vegetable Pot Pie, Vegetable Quiche
Celine	Breath of Fire, Crystal Rose, Essence Blossom, Frost Lily, Hydrangea, Middlemist, Plum Blossom, Rose, Snowdrop Anemone, Temple Flower	Catmint, Celosia, Chrysanthemum, Cosmos, Crocus, Daffodil, Daisy, Dandelion, Heather, Iris, Jasmine, Lilac, Marigold, Poinsettia, Rose Tea, Snapdragon, Spring Salad, Sunflower, Tulip, Viola
Eiland	Caldosian Chocolate Cake, Coconut Cream Pie, Glowberry Cookies, Golden Cheesecake, Golden Cookies, Ice Cream Sundae, Mont Blanc, Pumpkin Pie, Spell Fruit Parfait, Strawberry Shortcake	Apple Pie, Berries and Cream, Candied Lemon Peel, Candied Strawberries, Caramelized Moon Fruit, Caramel Candy, Cherry Cobbler, Cherry Tart, Chocolate, Crystal Berry Pie, Sour Lemon Cake, Lemon Pie, Peaches and Cream, Pomegranate Sorbet, Pudding, Roasted Rice Tea, Strawberries and Cream, Sweet Sesame Balls, Wildberry Pie, Wintergreen Ice Cream
Hayden	Golden Butter, Golden Cheese, Golden Duck Egg, Golden Duck Mayonnaise, Golden Egg, Golden Mayonnaise, Golden Cow Milk, Pumpkin Pie, Stone Horse, Vegetable Quiche	Apple Pie, Butter, Cheese, Coconut Cream Pie, Coffee, Crystal Berry Pie, Duck Egg, Duck Mayonnaise, Egg, Lemon Pie, Loaded Baked Potato, Mayonnaise, Cow Milk, Mushroom Steak Dinner, Pumpkin Stew, Quiche, Sweet Potato Pie, Cup of Tea, Vegetable Pot Pie, Wildberry Pie
Juniper	Ancient Royal Scepter, Black Tablet, Crystal Rose, Fish Tacos, Golden Cookies, Hardened Essence, Moon Fruit Cake, Mushroom Brew, Pizza, Spell Fruit Parfait	Crunchy Chickpeas, Crystal, Fog Orchid, Frog, Latte, Middlemist, Morel Mushroom, Nettle, Newt, Night Queen, Essence Blossom, Poinsettia, Red Toadstool, Red Wine, Monster Powder, Shadow Flower, Spell Fruit, Toasted Sunflower Seeds, Water Chestnut Fritters, White Wine
March	Dragon Forged Bracelet, Gold Ingot, Meteorite, Mistril Ingot, Perfect Copper Ore, Perfect Gold Ore, Perfect Iron Ore, Perfect Mistril Ore, Perfect Silver Ore, Sushi Platter	Beer, Chocolate, Caldosian Chocolate Cake, Coffee, Copper Ingot, Ore Copper, Ore Gold, Grilled Eel Rice Bowl, Hot Cocoa, Iron Ingot, Ore Iron, Ore Mistril, Mocha, Perch Risotto, Red Snapper Sushi, Sea Bream Rice, Sesame Tuna Bowl, Silver Ingot, Ore Silver, Spicy Crab Sushi
Reina	Apple Honey Curry, Breaded Catfish, Cabbage Slaw, Ice Cream Sundae, Incredibly Hot Pot, Rosemary Garlic Noodles, Seafood Boil, Seafood Snow Pea Noodles, Spell Fruit Parfait, Sushi Platter	Cauliflower Curry, Cheese, Cod With Thyme, Coffee, Crystal Berry Pie, Daffodil, Deep Sea Soup, Flour, Garlic, Garlic Bread, Grilled Cheese, Iced Coffee, Miners Mushroom Stew, Pizza, Rice, Spicy Cheddar Biscuit, Sugar, Turnip and Potato Gratin, Upper Mines Mushroom, Wildberry Pie
Ryis	Golden Bristle, Golden Bull Horn, Golden Cheesecake, Golden Cookies, Golden Duck Feather, Golden Feather, Golden Horse Hair, Hard Wood, Lobster Roll, Veggie Sub Sandwich	Basic Wood, Beer, Bread, Bristle, Bull Horn, Clay, Cranberry Orange Scone, Crystal, Duck Feather, Feather, Garlic Bread, Glass, Glowberry Cookies, Horse Hair, Iced Coffee, Lilac, Obsidian, Paper, Ore Stone, Strawberry Shortcake
Seridia	Dragon Forged Fang, Dragon Forged Core, Dragon Forged Horn, Dragon Forged Powder, Dragon Pact Tablet, Monster Mash, Perfect Mistril Ore, Spell Fruit Parfait, Hardened Essence, Unknown Dragon Statuette, Void Powder, Void Pearl, Void Stone, Void Herb	Essence Blossom, Monster Cookie, Monster Horn, Monster Powder, Monster Shell, Monster Fang, Monster Whisker, Monster Block, Monster Wing, Night Queen, Ore Pink Diamond, Plum Blossom, Ancient Royal Scepter, Dragon Forged Bracelet, Purple Mushroom, Red Toadstool
Valen	Beet, Beet Salad, Beet Soup, Deep Sea Soup, Dragon Scale, Harvest Plate, Rosemary Garlic Noodles, Summer Salad, Sushi Platter, Vegetable Soup	Coffee, Cucumber, Cucumber Salad, Dandelion, Garlic, Green Tea, Herb Salad, Honey, Nettle, Pan Fried Salmon, Red Wine, Rose Hip, Rosehip Jam, Rosemary, Seaweed, Seaweed Salad, Spring Salad, Sweetroot, Underseaweed, White Wine

Gift Preferences for Non-Dateable Villagers

While you cannot romance the rest of the town, building relationships with non-dateable villagers is still highly beneficial. Doing so unlocks unique story events, helpful items, and new quests.

When you don't have access to fields of mistria universal gifts, you can use this table to find specific liked and loved items for the rest of the town's residents.

Villager	Loved Gifts	Liked Gifts
Darcy	Chocolate, Coconut Milk, Crystal Berries, Golden Cheesecake, Golden Cookies, Golden Egg, Golden Cow Milk, Cow Milk, Spell Fruit, Sugar	Apple, Blackberry, Blueberry, Cherry, Coconut, Cranberry, Moon Fruit, Egg, Flour, Glowberry, Lemon, Orange, Peach, Pear, Pomegranate, Strawberry, Tea, Wild Berries, Wild Grapes, Wintergreen Berry
Dell	Alda Bronze Sword, Aldarian Sword, Apple Juice, Bullfrog, Caldosian Sword, Chocolate, Golden Cookies, Hermit Crab, Ice Cream Sundae, Jam Sandwich	Apple, Basic Wood, Blackberry, Caramel Candy, Cattail, Clay, Frog, Glowberry Cookies, Grape Juice, Grilled Cheese, Hot Cocoa, Sour Lemon Cake, Lemonade, Lightning Dragonfly, Monster Cookie, Pudding, Snail, Ore Stone, Trail Mix, Turtle
Dozy	Basic Wood, Hard Boiled Egg, Catfish, Crystalline Cricket, Golden Duck Egg, Golden Egg, Hard Wood, Dog Treat, Petrified Wood, Tiny Dinosaur Skeleton	Butterfly, Carrot, Cicada, Cod, Cricket, Duck Egg, Egg, Firefly, Fuzzy Moth, Grasshopper, Mackerel, Monster Shell, Monster Whisker, Pumpkin, Red Snapper, Rockroot, Salmon, Sardine, Sod, Tuna
Elsie	Alda Feather Pendant, Cranberry Orange Scone, Crystal Rose, Jasmine Tea, Mont Blanc, Paper, Perfect Diamond, Poached Pear, Rose, Wildberry Scone	Blackberry Jam, Blueberry Jam, Cherry Tart, Chrysanthemum, Cosmos, Crystal Berry Pie, Ore Diamond, Iris, Jasmine, Lilac, Marmalade, Moon Fruit Cake, Pomegranate Sorbet, Quiche, Red Wine, Rosehip Jam, Rose Hip, Tulip, White Wine, Wild Berry Jam
Errol	Baked Sweetroot, Braised Burdock, Clam Chowder, Fish Skewer, Miners Helmet, Miners Mushroom Stew, Pan Fried Bream, Perch Risotto, Shard Mass, White Wine	Apple, Beer, Breaded Catfish, Canned Sardines, Ore Copper, Fish Stew, Ore Gold, Hot Toddy, Ore Iron, Ore Mistril, Latte, Mocha, Pear, Peat, Pomegranate, Red Wine, Ore Silver, Sweetroot, Upper Mines Mushroom, Wintergreen Ice Cream
Hemlock	Beer, Chili Coconut Curry, Crayfish Etouffee, Crispy Fried Earthshroom, Caldosian Drinking Horn, Hot Toddy, Incredibly Hot Pot, White Wine, Wild Grapes	Spicy Corn, Basil, Chili Pepper, Coffee, Crunchy Chickpeas, Dried Squid, Honey, Lemon, Roasted Chestnuts, Rock Salt, Sesame Broccoli, Spicy Cheddar Biscuit, Grape Juice, Spicy Crab Sushi, Spicy Water Chestnuts, Summer Salad, Tea, Thyme, Toasted Sunflower Seeds, Trail Mix, Water Chestnut Fritters
Henrietta	Berry Bowl, Animal Currency, Corn, Glowberry, Grilled Corn, Strawberry, Watermelon, Quality Small Animal Feed, Deluxe Small Animal Feed, Ultimate Small Animal Feed	Apple, Blackberry, Blueberry, Broccoli, Cherry, Chestnut, Coconut, Cranberry, Cucumber, Grass Seed, Moon Fruit, Orange, Peach, Pear, Peas, Pomegranate, Pumpkin, Wild Berries, Wild Grapes, Wintergreen Berry
Holt	Flour, Gazpacho, Hard Wood, Loaded Baked Potato, Baked Potato, Stone Horse, Narrows Moss, Coffee, Watermelon, Wheat	Potato, Beet, Broccoli, Cabbage, Carrot, Cauliflower, Chili Pepper, Corn, Cranberry, Cucumber, Daikon Radish, Onion, Peas, Pumpkin, Rice Stalk, Snow Peas, Strawberry, Sugar Cane, Sweet Potato, Turnip
Josephine	Jasmine Tea, Green Tea, Lavender Tea, Quiche, Roasted Rice Tea, Rose Tea, Cup of Tea, Incredibly Hot Pot, Chili Coconut Curry, Crayfish Etouffee	Breath of Fire, Chili Pepper, Curry Powder, Essence Blossom, Flour, Honey, Jam Sandwich, Jasmine, Oil, Rice, Rose, Soy Sauce, Spicy Cheddar Biscuit, Spicy Corn, Spicy Crab Sushi, Spicy Water Chestnuts, Sugar, Sunflower, Tea, Wild Berry Jam
Louis	Golden Alpaca Wool, Golden Bristle, Golden Duck Feather, Golden Feather, Golden Horse Hair, Golden Rabbit Wool, Golden Sheep Wool, Middlemist, Red Wine, White Wine	Alpaca Wool, Breath of Fire, Bristle, Cattail, Celosia, Crystal, Crystal Rose, Duck Feather, Essence Blossom, Feather, Cup of Tea, Frost Lily, Horse Hair, Lilac, Marigold, Rabbit Wool, Shadow Flower, Snapdragon, Viola, Sheep Wool
Luc	Amber Trapped Insect, Bumblebee, Copper Beetle, Fairy Bee, Grilled Cheese, Jewel Beetle, Rhinoceros Beetle, Roly Poly, Sea Scarab, Strobe Firefly	Ant, Butterfly, Cave Shrimp, Cheese, Chocolate, Cricket, Fuzzy Moth, Hot Cocoa, Hummingbird Hawk Moth, Inchworm, Jam Sandwich, Mistmoth, Monarch Butterfly, Orchid Mantis, Pond Skater, Praying Mantis, Puddle Spider, River Snail, Snowball Beetle, Worm
Merri	Golden Alpaca Wool, Golden Bristle, Golden Bull Horn, Golden Duck Feather, Golden Horse Hair, Golden Rabbit Wool, Golden Feather, Golden Sheep Wool, Perfect Diamond, Perfect Pink Diamond	Alpaca Wool, Basic Wood, Bristle, Bull Horn, Clay, Coral, Crystal, Ore Diamond, Duck Feather, Glass, Hard Wood, Horse Hair, Latte, Obsidian, Paper, Ore Pink Diamond, Rabbit Wool, Feather, Sheep Wool, Ore Stone
Nora	Ancient Gold Coin, Cherry Cobbler, Fried Rice, Onion Soup, Peaches and Cream, Pumpkin Stew, Roasted Cauliflower, Roasted Sweet Potato, Sauteed Snow Peas, Toasted Sunflower Seeds	Baked Potato, Beet Salad, Braised Burdock, Braised Carrots, Butter, Cabbage Slaw, Candied Lemon Peel, Coconut Milk, Coffee, Cucumber Salad, Grilled Corn, Latte, Poached Pear, Salted Watermelon, Sesame Broccoli, Simmered Daikon, Sliced Turnip, Spicy Water Chestnuts, Strawberries and Cream, Tomato Soup
Stillwell	Fog Orchid, Black Tablet, Weightless Stone, Red Wine	Caramelized Moon Fruit, Caramel Candy, Cherry Cobbler, Cherry Tart, Chocolate, Coffee, Crystal, Crystal Berries, Crystal Rose, Crystal Wing Moth, Cup of Tea, Glass, Middlemist, Muttering Cube, Night Queen, Red Toadstool, Shadow Flower, Shardfin, Strawberry Shortcake, Wintergreen Ice Cream
Terithia	Cod With Thyme, Fish Stew, Giant Fish Scale, Lobster Roll, Perch Risotto, Rubber Fish, Sea Bream Rice, Seafood Boil, Seafood Snow Pea Noodles, Sushi Platter	Breaded Catfish, Canned Sardines, Clam Chowder, Crayfish Etouffee, Deep Sea Soup, Dried Squid, Fish Skewer, Fish Tacos, Grilled Eel Rice Bowl, Horseradish Salmon, Mackerel Sashimi, Pan Fried Bream, Pan Fried Salmon, Pan Fried Snapper, Red Snapper Sushi, Salmon Sashimi, Sesame Tuna Bowl, Smoked Trout Soup, Spicy Crab Sushi, Tuna Sashimi
Vera	Beet Soup, Chili Coconut Curry, Gazpacho, Harvest Plate, Mushroom Steak Dinner, Pomegranate Sorbet, Summer Salad, Sweet Potato Pie, Vegetable Pot Pie, Winter Stew	Beet Salad, Braised Burdock, Cauliflower Curry, Chickpea Curry, Coconut Milk, Cranberry Juice, Crispy Fried Earthshroom, Cucumber Salad, Orange Juice, Pomegranate, Pomegranate Juice, Roasted Cauliflower, Salted Watermelon, Sauteed Snow Peas, Seaweed Salad, Sesame Broccoli, Simmered Daikon, Steamed Broccoli, Tide Salad, Turnip and Cabbage Salad
Wheedle	Ancient Gold Coin, Coin Lump, Fiber, Perfect Diamond, Perfect Emerald, Perfect Gold Ore, Perfect Pink Diamond, Perfect Ruby, Perfect Sapphire	Ore Pink Diamond, Ore Diamond, Ore Emerald, Gold Ingot, Ore Gold, Golden Alpaca Wool, Golden Bristle, Golden Bull Horn, Golden Cheesecake, Golden Cookies, Golden Duck Egg, Golden Duck Feather, Golden Egg, Golden Feather, Golden Horse Hair, Golden Rabbit Wool, Golden Sheep Wool, Dragon Forged Bracelet, Ore Ruby, Rusted Treasure Chest, Ore Sapphire
Zorel	Middlemist, Sunflower	Heather, Morel Mushroom, Mushroom Rice, Red Toadstool, Upper Mines Mushroom, Glowing Mushroom, Miners Mushroom Stew, Wild Mushroom, Dandelion, Fiddlehead, Nettle, Wild Leek, Fennel, Sage

Banned and Hated Gifts to Avoid

Even the best fields of mistria universal gifts can cause issues if you accidentally hand over a hated or banned item to the wrong villager. Hated items trigger negative dialogue and damage your relationship points. Banned items are completely restricted, meaning the game will not allow you to hand them over to that specific NPC.

Character	Hated Gifts	Banned Gifts
Adeline	Junk, Bugs, Mushroomy, Weird Gift	Morel Mushroom
Balor	Junk, Bugs, Weird Gift	Ant
Caldarus	Junk, Bugs, Dragon Part, Weird Gift	Unknown Dragon Statuette
Celine	Junk, Bugs, Weird Gift	Caterpillar
Darcy	Junk, Bugs, Weird Gift	Ant
Dell	Caffeine, Alcohol, Broccoli	Alcohol, Caffeine, Bomb
Dozy	Chili Pepper	Alcohol, Caffeine, Choco
Eiland	Frog	(None)
Elsie	Praying Mantis	(None)
Errol	Junk, Bugs, Weird Gift	Hard Boiled Egg
Hayden	Junk, Bugs, Fishy, Weird Gift	Sushi Platter
Hemlock	Junk, Bugs, Weird Gift	Newt
Henrietta	Garlic	Alcohol, Caffeine, Choco
Holt	Junk, Bugs, Weird Gift	Puddle Spider
Josephine	Junk, Bugs, Weird Gift	Worm
Juniper	Junk, Bugs, Weird Gift	Sod
Landen	Junk, Bugs, Weird Gift	Roly Poly
Louis	Junk, Bugs, Weird Gift	Fuzzy Moth
Luc	Junk, Weird Gift	Alcohol, Caffeine, Bomb
Maple	Junk, Bugs, Weird Gift	Alcohol, Caffeine, Bomb
March	Junk, Bugs, Archaeology, Flower, Forageable, Weird Gift	Redhead Worm
Merri	Junk, Bugs, Weird Gift	Snail
Nora	Junk, Bugs, Weird Gift	Narrows Moss
Olric	Junk, Bugs, Weird Gift	Rockbiter
Reina	Junk, Bugs, Weird Gift	Tunnel Millipede
Ryis	Junk, Bugs, Weird Gift	Pond Skater
Seridia	Junk, Bugs, Dragon Part, Weird Gift	Statuette of Caldarus
Stillwell	Junk, Bugs, Weird Gift	Sunflower
Taliferro	Junk, Bugs, Weird Gift	Monster Mash
Terithia	Junk, Bugs, Weird Gift	Fiber
Valen	Junk, Bugs, Weird Gift	Red Toadstool
Vera	Junk, Bugs, Fishable, Animal Product, Weird Gift	Clam
Wheedle	Junk, Bugs, Weird Gift	Criminal Confession
Zorel	Junk, Bugs, Weird Gift	Cicada

Frequently Asked Questions About Fields of Mistria Gifting

Can I use fields of mistria universal gifts to raise hearts quickly?

While there isn't a single item that is loved by every resident, carrying high-value items like Golden Cookies and Coffee is the most efficient way to raise heart levels across the town. Coffee is liked by over a dozen characters, making it an excellent baseline gift to keep in your inventory.

What happens if I try to give a character a banned gift?

The game mechanics prevent you from giving banned gifts to specified characters. These restrictions are in place because the items are either harmful or highly inappropriate for the recipient.

Are there any true fields of mistria universal gifts that every single NPC loves?

No single item is universally loved by all NPCs. However, items like Golden Cookies, Golden Cheesecake, and Perfect Diamonds come very close, as they are loved or liked by a large portion of the town's population.

How much of a friendship boost do I get on a character's birthday?

Giving a liked or loved gift on a villager's birthday provides a substantial boost to their heart level, making it the most efficient day of the year to prioritize gifting them.

Sources

Fields of Mistria Gift Guide