Cable supports on the cheap...

Rebar chairs or risers, $37 for 200 chairs. 

According to Synergistic research aluminum is the material of choice. 

cable riser demo

these aren't on the cheap: but Money back guarantee- I didn't hear a difference on my macbook with my $2 dollar speakers and $10 DAC :) 

But this would be an easy blind test- for those of you whose computer is hooked up to your hifi- have someone else hide the computer from view, and have them click the video back and forth on the with/without risers sections and see if you can tell the difference 9/10 times. 

Lets make this easy AND cheap - just take a cd jewel box, open it up, turn it on the side and you have a good cable support and almost everyone has some of those!

For all the anal-retentive cable lifter audiophiles, just lay your cables on a bunch of Charmin Ultrasoft rolls.  If you can't hear a difference, then you haven't wasted any money.