I use an old Agfa Isolette folder. It is only 6x6, but I think it makes an ideal pinhole camera. One reason is that the lenses tend to seize up, rendering the camera next to valueless for its intended purpose. You can easily remove the lens, though, and tape a pinhole on. The camera is of inexpensive construction so it is quite light, and it folds to fit in a shirt pocket. It has a tripod mount and a flash sync. The only thing is, no "t" setting, so you have to use "b" and a locking shutter release -- but that isn't so hard.