Printer. Paper. Rubber band. Two rolls of 35mm film. Do you have these things? Great. Let's make you a camera.
The pinhole camera is about as simple as design gets. As opposed to lenses and fancy shutters, the pinhole design features the most basic design ideal - a hole in a box.
A Flickr member has shared the template for the swank pinhole camera you see above here, along with step-by-step instructions (including a handy chart for exposure times) for assembly/operation.
From what I can tell, the project is about as simple as DIY stuff gets, and there's a pleasant, delayed payoff (that most of us have lost with digital) as you have the film developed to see if the project worked at all. [Flickr via MAKE via Wired]