For a few more dollars you can buy a WOCA which is a Holga with a glass lens. I have a couple of Holgas and find they are great fun. There are two holes to cover with tape, make a little cover for the film counter out of tape that you can hinge up between exposures and you are ready to go. The sites mentioned contain additional mods. Painting the inside flat black is probably a good idea. I have no light leaks with mine and perfer to have the only "flaws" to be a result of the lens. I use one normal and the other one I modified to keep the shutter open for long night exposures. The most ideal film in my mind is the Arista 400, basically HP5.