I like the pintoids idea. Finally something to do with the Altoids tin that's occupied the space next to my mouse for the past week...
I'm also going to shoot some film in my plastic coffee can pinhole camera.
Maybe when (and if, very big if) I get my Autochrome plates working, I can shoot some of those.
If anyone hasn't been able to tell yet, I love shooting around ideas, which isn't a bad thing though. So here's another : has anyone ever tried UV or IR pinholing. The exposures I'd imagine would be LONG, but that'd be half of the fun.