Your post comes about a month early for me to show-n-tell, but I went all-in. I built a cabinet that looks like a shadow box that holds 9 amplifiers, so of course I have 12 amps stacked on it

That was a couple of years ago. Now I am building a full-width drawer riser that the cabinet will sit on. The drawer will hold all of my stomp boxes, about 60. I'm waiting for a Thanksgiving break from work and 'life' to spend a few days in the basement to pound it out.
I have a linear actuator that turns a lazy Susan to open the drawer at about 2" per second. My wife thought the motor was completely unnecessary, so I didn't tell her about the remote control...
It's not enough for all of my amps, but it will get all my pedals off the floor and free up more drawers. In short - you have the right idea, go vertical. Mine takes up most of the wall, but only 15" of the floor.