Ubiquiti EdgeRouter X

This tiny box is a rock-solid alternative to a consumer home router. A little harder to set up than your typical consumer router, but it’s worth it. Pair it (and power it) with a Unifi access point and the PoE injector comes with it.
Buy on Amazon
WiFi Access Point

Ubiquiti Unifi AP-AC-Lite Wireless Access Point

A tiny disk that runs circles around consumer WiFi routers. Powered via the network cable, so you can place it where it needs to be, without worrying about power outlets. For large spaces, a few of these make a great team.
Buy on Amazon