Oh man, that makes a lot of sense actually. My grandmother used to gamble for milk caps.

Only problem was, the milk caps had a voucher on them you could redeem at the general store.

Addendum to the only problem.. her parents owned the general store and would be the ones paying out.

Addendum to the addendum, my grandmother was reeeeallly good at poker, and become quite the scandal in town. 😆