Home made cable lifters.

If you have a gas high temperature kiln, shape or mold the shape you need and apply a salt glaze and fire. If not forget about anything other than high fire ceramics.

Wood, glass, plastic, and even paper in my experience do not do the job. Even unglazed ceramics like bricks are no good.

I have found that discarded ceramic electrical insulators such as you might find outside your utility company can be very good, although they might not have WAF.

Mmakshak, Elusive Disc and others have utilities insulators for sale. They look like what you see on most telephone and electric poles. All I can say is that I have some of what RightWay Audio used to sell and they sound better than those I found outside my local utility in the discard pile.

I used to have access to a gas high fire kiln and have found pots that I made then to be good under cables, but my wife objects to their use on the floor.

Groovey, I have wood plank floors and have no radient heat. I find it imperative to raise the cables. I don't know about the ceramic hooks. All I can suggest is to try them. The cables would still be very close to the wall surface, however.

Chadnliz, why would that be so? I have never heard any cables that are immune to any contact whatsoever with surfaces other than ceramic.

Unsound, great pun.