I found this fun project over at Photojojo.

There is a complete step-by-step guide on how to make it.
It’s highly useful for tricking enemy spies into believing you are a harmless bookworm instead of the undercover photo ninja that you are. He, he…

uuuh! Ricoh 🙂 🙂
Thanks so much for this link. I have a couple of mini cameras (minus the outer bodies) that might be fun to work into a project like this.