Here's my 3D printed mini network rack.
It uses a TP-LINK TL-SG108 switch, a DIY patch panel, and a Raspberry Pi running PiHole. Here's the stl files if you would like to 3D print one yourself.
This is awesome! I have recently gotten 3 Dell Optiplex Micros that I will be adding into my Proxmox cluster. Been thinking about how i am going to rack them, 3d printing a rack seems like an awesome idea!