Same. I have two Dell SFF 3070s and some MSI micro units in a rack - planning on getting some more for my Proxmox cluster. ServeTheHome has a great resource for the compute nodes [0] and GeekPi makes some awesome 10" racks [1]

[0] https://www.servethehome.com/introducing-project-tinyminimic...

[1] https://www.amazon.com/GeeekPi-Cabinet-Equipment-RackMate-Ra...