>>521056536
Collecting non-precious commemorative coins is cool too. Has Russia done something similar to this (but for Russian regions/oblast obviously): https://en.wikipedia.org/wiki/50_State_quarters

That's a very fun set to collect, especially if you try to get most of the coins from change (harder to do now, admittedly).

Also US has "Innovation Dollar". Designs on many of them I don't like (I would even dare say are bad/boring) but there are some cool people there and it's a big shiny yellow coin so what's to dislike??
https://en.wikipedia.org/wiki/American_Innovation_dollars

Love me some big coins. I should just pay for a set of Soviet coins at this point...