My setup, seeing that people are posting theirs.
+ BenQ 22" monitor
+ Custom-built PC
+ Fried i7 motherboard :(
+ Working i3 motherboard
+ 2 Green fans (top, back)
+ 2 Red fans (front)
+ (not-working-well) CD/DVD disk
+ 2G WD hard drive (not SSD :( )
+ 4-port USB 3.0 hub
+ SD card reader (with 3 more storage devices it can read)
+ Webcam
+ HP DeskJet Ink Advantage
+ Horrible mechanical keyboard
+ Special keys (music player, play/pause, next/prev, etc.)
+ Mouse that doesn't stop glowing
+ Awesome speakers
+ 4 lights
+ Water jumps through the lights whenever audio rises
+ Xbox 360 S (2G internal storage: Ugh)
+ Speakers connected to Xbox 360
+ Desk Lamp

Software:
+ rEFInd
+ Arch Linux
+ Plymouth
+ Systemd
+ i3-gaps (Me)
+ GNOME (full) (for rest of family)
+ NeoVim
+ XTerm
+ Cmus