haven't got started on the picture box yet, but intend to do so this weekend. I am going to try to just cut some squares in a cardboard box for now, cover the holes with some white sheet, (ripstop nylon would probably be better though) and shoot some "natural" light spots through it. Tape or glue a nice background on, maybe add some drift wood. Hopefully that will work, as long as I put the camera on a tripod there should be enought light for a decent picture.
You can buy a small photo tent off ebay for 30 dollars or so, but I'm cheap