the other interesting coin i picked up: 20 Kopecs from the last years of the USSR

try putting it in a coinstar

I had a small jar of Soviet change at one point. It might still be sitting somewhere in the apartment my parents own in Moscow suburbs. Not a lot of chance of me checking on it any time soon, though.

I gave a "one of each" bag collected by me + better half and kid1. Nothing that exotic, but some Polish Zloty coins from before redenomination in the 1990s.