A pair of glasses that nobody else can see through, a fixed size watch that will only fit the smallest of wrists, and a mostly empty wallet with cryptic notes in it going back over a decade.
A small plain wooden box, with a gold-looking clasp.
Upon opening, the person would be granted anxiety, depression, empathy, and self-loathing, or an increase of the same, to the point they'd often wish they'd never existed.
If by "defeated" you mean "killed outright", there'd also be a small slip of paper saying "Thank you."
Empty beer can, an overly expensive but highly niche PC part (for example a fiber channel card or backup capacitors for raid controllers), a guitar pick, and an airport lounge access card.
3 randomly rolled unique quality items off a table of 1000. All 1000 of them have flavor text that eludes to them having hidden stats, but actually 500 of them have no stats at all and the 500 others modify stats irrelevant to the game with things like "30% more percentages" and +0.0001% more ‽"
3d4*100 polyhedral dice, most of which are d6s and d10s. Each die will have a 50% chance of being glow-in-the-dark, and a 1% chance of being unusually shaped.
Keys to work, apartment, attic storage and laundry room.
Wallet with debit card, public transport card, driving license, public pool membership card (expired several years ago), European health insurance card, eyeglass perscription.
A pile of shit... literally. I have IBS, so there is always more shit just waiting for the wrong time. Aside from that... extra clothes, see above. Lol
Well, obviously the usual drops for humans, but since I'm a unique, named encounter, I also have a chance to drop:
A three-prong soil moisture sensor
1d3 polyhedral dice, random
A plastic card with a random certifications and qualification (roll 1d20 on the qualification table, six time. Duplicates mean last year's card wasn't thrown out)
My gimmick is that it depends. On five days out of the week, some Basic meds, electronics, an Uncommon wireless headset, a Rare hat, but most importantly, a Legendary key card to a bank operations center. On one of those days in particular, it gets even better. Not only do I have the key card, but I also drop an Exotic Red Dragon walking stick, +1 Leather Bracers, 1-3 random Rare or better magic pendants, and an Exotic His and Hers Dungeon Divers Duffle containing 5 random sets of Uncommon or better polyhedral dice, 3 Books of Gaming, and 2 Player's Notebooks.
Writing this post has made me feel rich and well equipped, even though I'm barely over minimum wage. Thank you, I guess, for helping appreciate what I have that much more.