Very Cool Things has a kit for building an Emile Berliner Gramophone
; record audio by etching grooves into any firm surface, from
Ramen lids to used CDs. (Wow — finally a use for those lousy
promotional CDs I keep getting!) It's imported from Japan but
fortunately includes English instructions. The only bad news is you'll
need a gramophone, not just any record player, to play the discs, but
this looks like good fun. These were sold out
BEFORE they were mentioned on Gizmodo, so grab `em fast!

Compatibility: Save your mis-toasted CDs and Cup Noodles lids
Availability/Price: US$69.99; limited availability but expected to ship late November