Upcycle Design wallets

I've noticed recently the number of "make-your-own"/recycled craft wallets popping up increasing. And after the dbCLay wallets did their round on the blogging circuit, and the many how-to's on how to make a duct tape wallet.
I've found yet another one(Upcycle Design), but this one offers a way more "found" look to it. Its how to make a wallet/coin-purse out of a milk/juice carton.
Which is cool because in South Africa (where I live) there are so many interesting "African" milk cartons with unique/quirky designs on them. I cant wait to give it a bash. Heres the site with the tutorial, Upcycle Design.