Cost | Purpose | What
$109 | Router | PCEngines apu2c2 http://pcengines.ch/apu2c2.htm
$10 | Router Case | http://pcengines.ch/case1d2blku.htm
$17 | Router Storage | http://pcengines.ch/msata16g.htm
$30 | Gigabit Switch | https://www.amazon.com/D-Link-Gigabit-Unmanaged-Desktop-DGS-108/dp/B000BCC0LO/
$80 | Wifi | Ubiquiti Unifi Lite https://www.amazon.com/Ubiquiti-Unifi-Ap-AC-Lite-UAPACLITEUS/dp/B015PR20GY/
With this setup, the router only does _routing_, so you also need a Wireless Access Point (WAP). Connect it like so: Modem->Router->Switch->WAP.
Bright color to stand out, as opposed to dark colors hiding imperfections. Another stretch, perhaps.