Somehow I find that hooking a lens cap pinhole onto an expensive digital camera just ain't into the spirit of things.

Surely the idea is a box with a wee hole in the front of it which could be made for a dollar or two.

Disclaimer: I paid for a Zero Image (hopeless with my hands, although my first try was with an old Agfa clunker and my home made pinhole) and I can respect the virtues of digital cameras as well.