Max, most of my pinhole stuff is going on f/295 now -- if you're interested in pinholing, that's probably the place for it (the whole place is pinhole, like this whole place is film). There aren't a huge number of active members, but that also means it's easier to keep up with the traffic on the forums there, and everyone there is a pinholer or wants to be a pinholer.
That's where I'll post the construction photos of my rotary. Basic synopsis, however: a rotating unit inside a round cookie tin will hold three (or in a larger tin, four) 9x12 or 4x5 (depending on the tin) films, with an indexed operating knob on the bottom of the camera. Top loading, of course, and yes, it'll have a tripod mount.