Hurray for those seeking to eke out the last bit of audio excellence from their systems! 
I agree with lifting cables, particularly off of carpet. Back in the day when I had a full-on speaker setup in my system, I always lifted speaker cables off of carpet and could always hear an improvement. Never could hear an improvement lifting off of a wood floor, though. Similarly with interconnects – always lifted, always carefully separated so they didn’t touch each other. This is sweating the details for the best sound. Cumulatively makes a big difference.
But my solution to lifting cables was always low-tech, zero cost. Here’s the last setup we had using corrugated cardboard (zero electrical/magnetic energy storage) for the lifters:
(Sorry for the fuzzy image. It’s copped out of the only photo I still have of this system.)