We celebrated the pinhole day this year by creating pinhole lens from a biscuit. This lens is compatible with all the bodies you have. 😉 All you need to mount the lens is duct tape.
I’ve been used it with a Pentacon Six creating paper negatives and a Canon EOS 20 body for digital images.
You can create different type of images with different bodies (focal length) and changing the placement of the lens.
The interesting effect of the lens caused by the little holes on the biscuit that are not perfectly aligned. So, if you get another cookie, you will get another effect.