Hehe my little minimalist 19" rack
1" angled iron, welding, grinding and handful of m6 bolts. TADA!
Picked up those nokias for 5e/piece from local recycling store. No freaking what to do with them, they just seemed interesting.
Seem like pentium 3 stuff, SDR, 4x Intel 100/10 nics, places for 2x pc card, cf or 2.5" IDE storage
Pfsense those babies.