Slim down your wallet with Just One Club Card
This looks kind of neat - check out this post from Lifehacker:
Web site Just One Club Card lets you condense up to 8 different discount club cards onto one front-and-back card, meaning your back-breaking wallet is about to go on a big diet.
Just enter the barcode numbers and choose the store for each card you want to get rid of and Just One Club Card will convert them to a printable, one- card format. Fold, laminate, and enjoy.