Craft, Art room storage. I re-purposed CD towers and empty CD cases that people were giving away or selling dirt cheap to store elements for altered art, scrapbooking, collage etc. I have over 800 CD cases full of fun stuff to create with. They hold everything from silk flowers, old junk jewelry pieces, chipboard, tags from clothing that I'll alter into tags, rhinestones, buttons, punchies,...just everything flat enough. Try it.