So I used to use a 20 peso bill and a office binder clip as a wallet. For some reason people thought that looked silly. After rebuffing pretty much all minimalist wallets as being too restirictive, too thick, too rigid, we ended up making one.
Then I realized the world needs them too. So head on over to BrownAndFolderson.com (because that's what you call a wallet) and check out the new project. I think they're pretty cool.
http://www.brownandfolderson.com/