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...

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.

Not your response set me off at all. i found your response to be perfectly acceptable and reasonable. it was Griffithds response i was finding to be intolerable in it's snide way. So I apologize if you felt it was in any way aimed at you. as i was not.
Tweaks can be very system dependent.
But to have someone respond in the way Griffithds did is to insult anyone who finds they can make a difference.
And so i responded 'in kind' to his lack of respect.
Again, sorry if you felt it was also directed at your honest comment.

the COPS will certainly think your car is going faster if it has the flame decals.. LOL

Yeah, as long as the testing of a tweak is dirt cheap I am all for it. And little wood blocks are good too. Scrap made into some rough blocks will do.
Still friends Stringreen
The ones mentioned by Geoff are good, and cheap too, just a little extra work to make.
And Enid Lumley who first thought of risers deserves credit for them. And for a lot of audio tweak insights.
And she never deserved the scorn heaped on her back in the days of her writing for TAS, either.

The comment on theory is too true.
I think Humans like to have 'reasons' for stuff, and so invent personal theories on the spot to self explain phenomena they do not really understand.
So all sorts of 'theories' are created to 'explain' the unexplained. The flaws in those theories do not invalidate the odd things going on in some tweaks.
They just mean no one has scientifically bothered to track down what is actually happening there.
So all those 'Cosmic' whatever theories of 'Quantum this or that' sound like crazy rubbish, and probably are crazy rubbish. But the actual fact of something occurs is real, (most of the time,anyway!, and somethimes it is too subtle to notice in a system, sometimes it makes a major effect. Then i have noticed the effects are cumilative. Several tweaks add up to a result.
Thus I have been doing stuff (free or nearly free) and just adding them, and lately got a great result from one (pigtil tweak with ferrit cores added), and i am certain it would not have been as good a result if the other tweaks had not been done.
So i am a tweaker, but ONLY for real cheap or free. Skip the expensive ones, as nearly all of them have a cheap or free analog. And i am skeptical, and really i have to laugh at some claims. But the problem is some of this stuff works. And that is why i am interested in it.
So my take is if it is free and easy to do what the Hell, try it. (though a few things are too far out for me too... LOL.. (Geoff, a comment for you!!))