I thought this might make Monopoly gaming life a little easier if you have a proper bank setup.
I've added exchange areas to avoid confusion when swapping notes.
Once glued together, this setup should be fairly stable but I have yet to test print it. I'll leave this as a WIP for now just in case I need to amend the design.
The 'complete' STL files are far too large for a normal printer so only use if you've got one the size of my basement :P