Whats the best way to lay out multiple amps?

[FilthiestCasual]

For my whole home setup I want to have all the amps in a centrally located networking closet, but now I'm wondering what the best way to organize everything would be. I would love to put everything in my network rack but unfortunately it's already full.

I assume these amps would get pretty hot so stacking them wouldn't be great, so as far as I'm aware the three options I'm left with are:

1. Get additional shelves and have 2 per shelf with breathing room above.
2. Lay them all on their sides
3. Make a 3d printed (or otherwise DIY) bracket to space them out.

Does anyone have experience dealing with a setup like this?

 

[Burnside]

I'd get a couple of small hifi stands and have two amps per stand. You probably would be able to fit two stands side by side. I've seen mention of the fosi stand being suitable, but check its dimensions.

 

[Wiimer]

How about the IKEA GREJIG?
Width: 58 cm