This will protect the label, as well as make it nice and shiny. They make it in almost every color of the rainbow, plus some eye-popping flourescents. Clear packaging tape . The smooth kind, not the kind with reinforcing strings in it. A label from a can or bottle .
Tin can and pop bottle labels make fun decorations.
Use what's in your cabinets, or buy a can of soup with the loose change in your pocket. They might get gooey from the sticky side of the duct tape, but a bit of nail polish remover will clean them right up. If you'd like, you can add a pocket to the inside of the wallet for your credit cards and all the random bits of paper you carry around. Cut two strips of duct tape the same height as the inside flap you made earlier. Partially overlap them, sticky side up, and repeat with another two pieces.