I find old computer mouse mats cut into strips or squares make ideal "feet" for equipment when stacking is unavoidable. Even new mouse mats are only 50p at computer fairs,
. Worth checking your local £1 shop, The "99p shop" at Dartford do packs of self adhesive felt pads which are useful. As for mains leads, I've seen many plastic record player turntables ruined because someone has coiled the lead on top
, and the two plastics have reacted..
.
Regards, Mick.