This one is pretty nifty: MakerBot is bringing back the magic of mixtapes (remember those? You know, from back when music comes in physical media?). The fun twist is that the MakerBot Mixtape is 3D printed! If you've got one of their Replicators, you can make 'em yourself.
Ours just got delivered to the NeatoHQ, and we're gonna be playing jazz polka all day and all night ... Link - Thanks Andrew!