Curate, connect, and discover
Like it says on the tin, but I want to add an implicit 'why? + how much? + since when? 👀' to all of these.
If the answer is 'no deep reason,' or 'they like it casually,' that's perfectly fine. There doesn't need to be a particular reason a character likes or dislikes something, but on the rare occasion that there is, it makes that character's preference much more interesting.
Meals/Dish
Fruit/Dessert/Artificial Flavor
Drinks
Scents (perfume, soap fragrance, naturally-occurring, food or event-related, etc.)
Sounds
Places
Flower/Plant
Method of Transportation
Weather/Season/Month
Early/Mid Childhood Memory
Teenage/Early Adult Memory
Acquaintance/Relative
Exes, if any
Song/Band/Music Genre
Instrument
Method of Listening to Music (live, headphones/boombox, etc.)
Textures
Sport/Activity
Book/Movie/TV Genres (Additionally, what types of endings do they prefer?)
Colors
Underwear/Sleepwear/Swimwear
Outerwear/Shoes
Style of Everydaywear (generally or down to the style of collar)
Print Pattern/Accents on Clothing (embroidery motifs, etc.)
Accessory/Take-Along Items
Affectionate Gestures/Phrases
Friend/Partner Activity
Method of Communication (letters, emails, phonecall, text, in-person, etc.)
Holiday/Event
Chore/Obligation/Work Task
Household Item (flatware, utility item, decor, appliance, etc.)
General Aesthetics/Ambience (ex: cluttered garage vs. minimalist living room)
Time of Day/Night