Various links to papercraft construction projects:
The best so far is a working paper organ, complete with bellows and punch-tape scores. (Description | Purchase Info) MusicThing has a full discussion including links to other paper kit instruments, a number of them free. And Paper Forest is a new blog devoted to construction out of paper. (via)
So what about paper digital instruments? Attach contact mics to the pipes, and air pressure can also become a control mechanism. And all of this proves paper can be excellent for prototyping. If you’ve got some ideas, I’d love to hear about them!