Separating cables, is there a mat to help along the way?


I'm trying to tackle separating my power cables from speaker and interconnects and ethernet/hdmi video and other cables  from each other. I will do the best I can behind my TV/console area but also wanted to use some kind of shielding if it is available for places I can't keep them far enough away. It's a bit tight back there but I do have verticle space which I may want to build a quasi shelf to hang cables on/from..  I figured if I could get them far enough away from each other and use something to wrap the rest of the cables so they would be separated that way.

Maybe even tape or something that would help, but I would hate to "ruin" my expensive cables with tape, but not out of the question if it would work, as I plan to keep my current cables permanently. 

I'm also planning on replacing all wall warts with some kind of lps to reduce unwanted noise even more. I'll plan on running those new cables away from the current ones I have now. Just planning for future upgrades now, with possibly Sbooster or  Uptone Js2 or something.  I've had a mess of cables behind my equipment for a while and have decided to clean it up.

Any ideas about the shielded mat or tape or covers?

Thanks for reading.
cissado
I use a lot of Velcro® double-sided 'Reusable Ties' 8 inches long & 1/2 inch wide.VEK91140 or VEK90924 package of 100 or 50
Put them on the cables and fashion other Velcro® clips or attachments.
I'm going to have to use something like that or bands and wood configured somehow to hold things up vertically, as I don't have the floor space. My issue is wanting to place a shield between the cables when/if I can't get enough separation between them.  

My equipment is on the same plane, so I can't go up and then back down too high with the stiff cables. I'll rework things, but a shield would help a lot if it were available.
3 inches from the AC power cords should be enough. Twisting any unshielded cords and cables is always a good plan. But the interconnects that need shielding already have shielding.