Mapeshade cable lifts or any cable lifts?

Generally one would want a non-interfering product. Cheapest cable risers are paper towel tubes wrapped with packing tape and cut into inch tall sections. Can add a small V and all set Even paint them black first. Pretty good for junk at hand. other sorts are to make a tripod out of chopsticks cut down and tied to hold the tripod together. Various things around the home can do.
The most expensive are just 'show' pieces, to display ones ostentatiousness.
For the not very handy, the small wood blocks available are decent.
So nearly anything can hold a cable off the floor.
Or, if one has cables that are carefully shielded, no riser is needed. One cable i know of is the Power Cables from Pangea. They have no interaction with anything outside the cable sheath. The Pangea can be right next to interconnects etc and no problems. Only the molded platic ends of Pangea power cables have any electromagnetic emmisions.
So those paper towel tubes are my choice, painted black, with shiny packing tape wrapping.. the V notch finishes them off.
A high end version would have a layer of antistatic foam inside of the tube. Or perhaps a small crystal in each tube...

I never found them to do anything at all...I have unshielded cables.

Stringreen:

I see we have an honest person amoung us!

So Griffithds, you can't hear anything either?
(JUST as insulting as your comment i guess, in it's own snide way)
Tweaks that cost nothing are not going to cost anyone to find out if they, in fact, can or cannot hear a result.
And just because YOU can't hear worth a damn*, does not mean no one else can.
*(or have equipment with enough subtlies to allow one to hear the difference)
Good luck

For another interesting (cheap) way to hold a cable off the floor i use a thin pure cotton rope woven back and forth in a simple loose pattern around the two wires of my 7 meter long Kimber Hero pre to amp interconnect. It holds the wires together both the width of the rope diameter apart, and off the floor the diameter of the rope, as the cable snakes it's way behind/over some other stuff in the way on it's route to the amp.
The rope was laying around too.
(If i would have bothered to dye the rope black it might have been less noticeable..
As for hearing a difference, you should try the tweak with some really cheap or free method before splurging for an expensive method of doing the tweak.
The free or nearly free method is almost always just as good as the pricey ones, just perhaps not as elegant.
It is true many peole do not think it is worth the bother. And also true many folks do not hear any difference. But to insult the people who do is insufferable IMO.