5e’s d100 starting trinkets are all very well, but after a few campaigns, you’re guaranteed to roll repeats. I don’t want too many characters starting with a “small, weightless stone block” or whatever.
It would be great to have a backup list of mysterious trinkets, so you could Cross Out and Write In as you used ’em. I’ll start; leave more in the comments.
A tattoo that specifies the time and place of an unknown future appointment.
A padlock that can be opened by all keys except the one it comes with.
An architectural schematic of a vast baby.
A botany book filled with dangerous misinformation.
An order for your own execution.
A wooden coin on which is written a curse.
A membership card to an exclusive club.
A list of six names, including yours, with three crossed out.
An obsidian figure of a panther; it has absolutely no magic powers.
A map with several strange inaccuracies.
A badge from a forbidden order of fallen paladins.
A doll-sized sword of masterwork quality, useful as a razorblade.
A tiny scroll bearing nine unusual names.
The deed to a house in an underwater city.
The recipe for a Potion of Deafness.
A dragonchess piece with a hidden compartment: inside is a human fingerbone.
A flute; its out-of-tune notes can play no known song.
A moss-covered book written in Druidic characters.
A green copper tool with no obvious function.
A piece of amber containing an insect; the insect wears a tiny saddle and halter.