I built my own using scrap 1"x1" from Home Depot. Took me a few hours to design and build. Total cost was around 7 or so bucks. I didn't have enough wall space in my garage, but have 10' ceilings, so my hanger idea worked perfectly and is light and easy to load the planes into. It also provides good support for the planes and doesn't put any pressure on key areas.

I bought brackets for all the corners for added support. I used simple soft pipe insulation for padding and a staples and zip ties to finish it off. Should be easy to build on to and extend as well. I've since added hangers for my controllers as well.