Upload & Sell: Off
Nothing that comes to mind other than building them to a solid, strong finish, especially if they surround an intricate set or live models. Don't want them crashing down and seriously hurting anyone.
Other than that, you can paint, wallpaper or decorate them to your liking, and light them as you would any actual wall. This thread just reminded me of cinematography class in college: we had to achieve three different exposures on one wall flat, with one 2K Mole Richardson. Talk about C-stands--they were flying everywhere with scrims and flags, haha. What a challenge!
Give me a day, I drew-up diagrams for wall jacks in the studio I work in. I'll send them your way.