It's been a while since I've mentioned any downloadable/printable papercraft, so this is to get some links off my chest:
If the Korg DS-10 doesn't excite you then maybe this will: the Papercraft Korg MS20.
Lastly, Glasgow maker Kritchard's first foray into kits, Octoboy:
"He possesses the usual octopus super powers of fitting into tiny spaces, disguise and lateral thinking, but is still a little nervous about embarking on a life of crime prevention."
Incidentally, you could do a lot worse than spend some hours perusing Kritchard's site, which exhibits his vast repertoire of custom-crafted cardboard robots, safari animals, ingenious cracker tat robots and his most recent creation, a charming wee pirate clock.