What would suck is finding a wallet.dat containing the addresses which display thousands of BTC, but then realizing it was encrypted and of course you don't know the password, and it could be short or long, but probably at least 20 characters so you just know you'll never crack it. (Or it could just be a watch only wallet, and there are no private keys at all.)
What I'd like to find is an Opendime on the street, and then discover it has been preloaded with thousand of BTC. (or just hundreds.)
Or some bronze metal plate, the size of a credit card, with 12~24 words stamped on it ...
Or an envelope with a one sheet of paper, printed with a QR code ...
Ive seen a few posters here claiming to have forgotten their wallet passwords. Probably hacked & stole a wallet.dat
What Ive often wondered is how many addresses still have unclaimed shit forks linked to them. I mean you could probably google image search bitcoin private keys & find an address or two with 0 bitcoin but a load of unclaimed BCH paired.