>>6197915I based it on one I built previously, which was itself based on something I saw on Youtube a while back. It costs <$12.00 in supplies, it's 3 thick poster boards I got from target, as well as a thin black and white poster board which I cut to length for the background. I'm going to go buy a few more different colors at an art supply store tomorrow to experiment with different color backdrops too.
Basically, I cut out from the poster boards five 12x12 inch pieces, and in three of them cut another square out 1" from each side. I stretch out a piece of very fragile tissue paper, used as packing material, and then used a glue stick on the white side of each open square, placed it on the tissue paper and cut away the excess. Then pieced the box together, though the top and bottom pieces needed to be trimmed a little further to fit inside properly. The lighting setup is three Philips 1500 lumen LED daylight bulbs mounted on three cheap clamp lights I got off amazon.
The only con is the tissue paper is really fragile, so I need to be extra careful with the box so that they don't rip and tear, especially when changing the backdrops.