Can you do anything with this?

My mom got a divorce, and this stuff belonged to her ex husband. She told him to come get it and he said keep it and has been gone for over a year and there was a bunch of stuff my mom wanted to get rid of. Some of this crap is really cool, and I found framed money from different countries

There are a ton of these, you could cover a whole wall top to bottom and I’m wondering what we can do with them? I mean regardless it’s either gonna be thrown out or given away if we don’t find uses for it.