When I was a kid, one of the things we occasionally did was play Convenient Store. We’d take a bunch of old boxes and empty jars and line them up on a desk with a teller. One would then be the owner and the rest would come buy from him with monopoly money and if we got bored we’d rob the store.
When we grew a bit older and started caring about money, we’d setup a garage sale with old junk found in the attic, selling our parents precious items for a lollypop and 2 pieces of string.
That’s evolution for you.