When you transferred your CDs into a more compact CD storage case, you will be left wondering what to do with this towering pile of empty cd jewel cases. The obvious solution will be to throw them away but there are more compelling reasons to reuse them instead. CD jewel cases are made of molded polystyrene, which is not easy to recycle. There are recycling facilities that do receive these but you can try figuring out a few more uses for them before you throw them out for recycling. The jewel cases can have their second lives as a lamp, photo frame, some wall art, or a mini dry erase board.