Gaffer Tape Wallet

db clay makes these excellent gaffer tape wallets. I guess that trumps my duct tape wallet. In any case, they come in a variety of printed versions, as well as a plain grey edition that they encourage you to customize yourself.

What is gaffer's tape? db clay says:

Gaffer's tape is a vinyl-impregnated cloth tape that is waterproof, abrasion resistant, industrial grade, and has a tensile strength nearing 48 lbs. per inch. Gaffer's tape is conventionally used by a Gaffer. This is an electrician who is responsible for the lighting & sound on a film or stage set. Every movie, every concert and every elementary school play are all held together by this material. The fundamentals of this material are also used in book binding, medical tape and other industrial applications.