$7.
A receipt from the engagement ring I just bought (I guess that's why only 7 ducks left).
Bank receipts.
Several ID cards, library card, credit/bank cards and a torn dollar that I've carried around for about 15 years.
Lots of reciepts that will get thrown away soon enough. Old Health Insurance cards, Store 'coupon cards', a Money clip that was my father's that I use to hold prescriptions, and of course my library card.