I like the design of the Grip-Rite rebar chairs more, and they're less than 1/20th the cost (per riser)!
chop stick holders.
I just noticed that chop stick holders hold the chopsticks about 1/2 inch, or 1 cm, from the table.I thought they might make good cable risers. They're cheap and made of wood or bamboo.You will need quite a few, so low cost is important.I've never used cable risers and I'm a bit skeptical, but this is might be a cheap way to experiment rather than let my uninformed bias rule!