Heres my setup in my attic office, yes it is always that tidy!
The first is of my Acer laptop with a LG screen plugged in for extra workspace.
The second is from left to right, on the floor, linux server, D-Link Di-614+, spare monitor & keyboard for repairing other PCs, Smart UPS 1400, old dual P3 PC, and on top is Laserjet 2100 and Deskjet 720C, I got the UPS and Laserjet free
I also have another UPS that the laptop and linux server is running off under the desk, I take the laptop battery out to prolong its life.
The third is my Proliant server, currently setup with a Windows SBS 2003 and 3x Windows 2003 Enterprise with Exchange 2003 Cluster, running on top of VMWare ESX server.
It's an ML350 G2 2x1.4GHz P3s, 1.4GB RAM, dual PSUs, 3x18.2Gb 15,000 hotplug drives attached to a Smartarray 532 in raid 5, a Compaq Remote Lights Out board and a DDS4 tape drive. Not the fastest of servers but its good enough to run as a testing system.