If you browse around many gadget shops, you will have invariably seen CD clocks for sale, usually in the $20 range, and thought, "nice, but too much money". Or, if you frequent memorabilia stores you'll see Elvis CD wall clocks. These use the same mechanism, but have a picture CD of Elvis on them instead, retailing in the $40 range. If either sound appealing, but both sound overpriced, here's a quick makers guide to creating your own.
Marquis de Geek