I've inherited a few old cameras from my uncle, the most interesting being the Polaroid Land 800 (roll film) camera. I know that the film is no longer produced for it, and that it's possible to convert it to regular rollfilm use, but I'm wondering if it's possible to use it with 4x5 film or paper instead (I know the image size will be smaller than that), as I'm not really keen on spending a lot of money of something that will probably have minimal use.

I'm visiting my parents at the moment, which is why I have the camera, but no film or paper to test it. It seems to me that it could work, but I'd like to know if anyone has tried it, and has any recommendations about holding the film/paper in place, or protecting it from the dimpled back.