[tremon]

My "rack" consists of three devices wall-mounted above the coatrack in the hallway: a Jetway industrial computer, a PoE switch and a UPS. Of those, only the computer would be essential for your use case. I'm one of those people that prefers to have wired ethernet all across the house, so the switch is mainly to power two additional switches in different locations.

The Jetway computers are similar to NUCs, but geared towards industrial installation rather than home consumer use, so they generally lack 4K HDMI support but include options for multiple serial ports, usb ports or network interfaces, similar to this: http://www.jetwayipc.com/product/hbjc390f841xx34b-series/ . Mine runs OpenBSD right now, but that doesn't support the Wifi card so I'm planning to migrate it back to Debian.