Pinhole cameras, more so than with any other type of camera, promote experimentation. Almost anything that can be made light tight can be turned into a pinhole camera. This can be anything from cookie tins and oatmeal boxes to carburetors and pumpkins. The pinhole itself can be bought with a hole laser cut in it or can be simply made with sandpaper, a needle and an aluminum soda can. Even using format specific film is an option. One can use photographic paper and cut it to the size needed and still be able to contact print with paper negatives. Making an exposure with a pinhole camera can be as simple or technical as the user wants, from "This should be close" to knowing right down to the second by using a light meter and a little math.