I think a use for the quarters such as a Gachapon machine would be cool. It could be full of cheaper items, with rare varients thrown in. Very small items to match the aesthetic. Maybe they come out of the machine in Gacha balls, and you push E to open them. Would make finding quarters a lot more exciting if you know about the machine. Also adds cool discovery for newer players.
I genuinely didn’t know that’s what these were called. https://en.wikipedia.org/wiki/Gashapon
Srsly, tho, this would be really cool to have toy miniatures of game things like the different knights, Cornelius, the zombs, what have you.