This is exactly what I did. I haven't done any A/B in my own system just yet, but I definitely plan to. Though I dont expect the same difference in Danny's system vs my own. Plus I recently made a new set of cables as I needed some that were a little longer than my original pair.
I got 2 sets of Chinese knockoff tinker toys for $30 and they're 1/2 the size of the originals.. 
Here's the picture Chris used in the video.

Get them at least 3" above your carpeted floor.
One thing to note about cable risers. The big differences happen when cables lay on carpet. Wool is the worst, but carpeting in general is bad.
Wood or tile flors? Not so much. YMMV - it is audio

I remember when I first tried cable risers, my system was off. When I lifted the last bit of speaker cable off of the floor, my tweeters went nuts reproducing the static charge as the cable was lifted. A thing that made me go: Hmmmmmm.I could tell you the changes I heard, but I won't. People that care and are interested will try this. The scoffers will just taunt. So be it.
Cryoed Tinker Toys? Uh, no.