I'll not drop much money because I use card most of the time... So whoever slays me will have wasted their efforts unless they fancy a bit of plastic (which to be fair they could use contactless... uh-oh)
If we're talking about actual items I might have on me then I guess my watch and my ring (university seal ring - not the animal sort of seal but the crest/seal of the uni). Other than that? Maybe my clothes would neatly fold up into a square and float above my head for people to collect if they really want them?
If we're talking figurative items which represent who I am as a person then it might be a bit different. Maybe a horn for summoning a centaur as a useful mount. Maybe a wind-up Dionysos as a lovely minion to follow people about for aesthetic purposes. Maybe a devious note leading people on a wild goose chase for clues but actually I'm just posthumously trolling people.
I fully expect that I'm the really difficult boss at the end of a particularly difficult post-game dungeon.