Mount two Mac minis in a 1U rackmount enclosure with the RackMac mini Rackmount Enclosure from Sonnet.
Sonnet Solo 10G Thunderbolt 3 to 10GBaseT/NBaseT Ethernet Adapter
Sonnet's RackMac Pro makes Mac Pro rack integration simple. Configured with one mounting bracket to start, the RackMac Pro securely encloses one Mac Pro in 4U of rack space - with the optional second mounting bracket, you can mount two Mac Pros side-by-side.
Sonnet Maccuff Mini Vesa/Desk Mount for Unibody Mac Mini, Locking, HDMI Cable
Using the PuckCuff, you can free up desk space and mount your eGFX Breakaway Puck to the back of a monitor with open VESA mounting holes.