@ozzy
Thanks for the idea of using copper pipe Styrofoam insulation for cable lifts. Have you tried this, or just read about it elsewhere?
I love going cheap when it makes sense. It seems to me that a 6' piece can be cut as needed and would effectively cushion and decouple the cable from any surface. I'm guessing the cables don't need to be very high up to achieve the intent. Looks are also not my top priority, although I have tried to keep the room attractive.