In Target yesterday I found some candy and mints in a metal container that looks just about right for 3x4 inch film. I got one that had a box of Boston Baked Beans inside. The depth of the metal box is 35mm. With a 0.265 pinhole this should give me a super-wide angle view of over a 100 degrees. Hope I can do something with it next week.
Yes, and those metal booze cylinders that hold a fifth or liter of hards stuff make interesting LF pinhole cameras too!. It's fun collecting them too! (hic!)