With this new light box you can change the background. My poster board has two holes punched at the top, then attached with little screws. :)
We made a few alterations: My husband added a piece on the top for an extra light. The box is lined with tissue paper, instead of a sheet. I used double stick tape to attach the tissue paper to the PVC pipe.
Donna Pool recommended foam boards covered with tinfoil to brighten the object. Thanks for the Tip :)