I know they make stands, but I don't really want to spend $130 on something at the moment. So, I'm looking for ideas on how to rig this thing up. 2 10x20 backdrops (black, white) My wall is 8ft tall, and about 10ft wide. I am able to screw things into the wall if necessary, and I am certainly up for a project. Requirement: Be able to switch between black/white rather quickly Any suggestions?