My remix of Roekels' "Wallet, Coins, Keys."
I didn't need a coin holder and wanted to save some room, so I redesigned it to have two of the triangular side pockets instead.
Hopefully this will be useful to someone.
I've added "Screw_Holes_Wallet_and_Key_Holder.stl" which includes holes for #6 drywall screws.
NOTE: I have not tested the screw version so I don't know if #6 Drywall screws will actually fit. I'm just going based on measurements online. It may take a bit of testing to find the right screw size.