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.
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.