What do you do with expired credit cards, empty gift cards and rewards cards? Reuse them! We have hand cut each guitar pick from old cards that are not recyclable in common single stream recycling systems. Typically made from PVC including a chip attached to a gold contact pad, they are not made of the most environmentally friendly materials. Spent gift cards and all of those store rewards card services, that have now gone digital....yup, we use those too.