My setup consists of - Left to right
Epson Print/scan/copy
Time Capsule 1TB ( not used now but still works )
Time Capsule 2TB ( vertical type )
Magic keyboard, touchpad and mouse
Mac Mini 2018 running Sequoia and 32GB memory runs Photoshop 2020 and used as everyday computer
On top is external 5 port USB and card reader
Mac Mini 2014 running ElCapitan ( kept as runs older Photoshop CS6 really well even though only 4GB memory ) - rarely used
Under this is external 4 port USB
There is an Intel NUC which I connect and use occasionally ( Windows 11 - urggggh!)
Underneath these is another Time Capsule 2TB - used as backup to the vertical Time Capsule
External DVD RW drive
Photography is my hobby, so Photoshop 2020 used almost daily. I also do a lot of research on my family tree, and use My Heritage software which is on the 2018 Mac Mini. The 2014 Mac Mini with photoshop CS6 was kept as I had a number of actions I had created and haven't reproduced them all on the newer machine as yet.