How to keep ic's and power cords from touching


I have a 5 shelf high mapleshade rack that sits about two feet from a back wall. The problem that I am facing has to do with my pairs of interconnects and powercords touching one another in the back of the rack. I know that this is a big no-no when it comes to acheiving the best sound. What suggestions or recommendations of devices that will help me fix this issue. Has anyone used the shunyata dark field cable elevators or a similar product to separate cables and cords? Thanks in advance for your help.
houstonjazzfan
Thanks everyone for sharing their tips and experince... This has been most helpful. I plan on purchasing some pipe foam insulation today and giving that a try.
One more thing to add, I also have most of my components on one large rack/stand/thing. The back of the rack/stand/thing has a purposefully cluster#$@% arrangement of both interconnects and power cables. Every interconnect is zip tied to a power cord running alongside. Why you may ask? Well, as you may have heard (mainly from my big mouth), I make interconnects. This is how I test for interference rejection. And honestly, don’t let anyone fool you by stating that its easy to have pollution from power cords, inferior IC shielding and the like. You would have to have a completely unusual/unrealistic scenario to be effected in this way. Most hum/buzz issues arise from almost every other issue than pollution through cords. My phono cable from tonearm to phono pre is completely surrounded by 3 power cords feeding my amps. Zyx .24mv cartridge, ~65db MC output from phono pres. DEAD SILENT. Cheers.
Aptquark's post immediately above makes a very good point, as confirmed by this excellent paper written by a noted authority:

http://www.jensen-transformers.com/an/an004.pdf

Regards,
-- Al
I agree that cable risers are a " myth". Get the pipe insulation tubes at Home depot. Cut them up acordingly to your liking ( 2" to 4" lenght) then insert your ICs thru the splits on the side of the tube. Nice looking and dirt cheap.