In my computer closet, I've got, IIRC:
*2 DVD burners
*1 DVD ROM
*3 or 4 floppy drives
*3 or 4 removable 5.25" IDE cartridges
*Tons of fans (most in packages and never opened)
*A huge box of cables
*A huge box of boards and more cables
*Several motherboard boxes full of screws, cables, bay covers, misc. parts
*2 iPaq docks
*iPaq
*Joysticks (2 IIRC)
*Steering wheel and brake pedals
*Tons of ZIP disks
*A couple of motherboards
*Amiga motherboard that needs to be repaired
*C64 and 1541 drive
*LJ 4L
*Tons of software (MS, old games, C64 stuff)
*Tons of boxes that I need to clear out and toss
*A couple of spare graphic cards
*Yet more cables
*Some Amiga ROMs
*Tons of old documentation
*A few old heatsinks and fans
*Some networking gear/hardware (spare switch, wall plates, boxes, etc)
*Many hard drives
And that's mainly just on 2 bookshelves and doesn't consider the two upper shelves in the closet!