I've got:
A £2 PC World toolkit off their bargain shelf, with all the torx bits that Compaq and HP like to annoy us with.
Win XP MVL disk
Dell WinXP and 2000 disks
Win 2000 Pro, Server and AS.
Citrix Metaframe 4 installation disks
Command and Conquer First Decade
PC Check CD
USB FDD
USB printer cable (I'm a contractor, I'm not allowed to go on their network!)
Stack of blank mini-DVDs
USB 2.5" HDD with 80Gb disk in
USB 3.5" HDD enclosure
Laptop (SZ2 Vaio)
Cleaning kit including air duster
Lots of ibuprofen
Ear plugs (ever go in a server room?!)
Cat5 crimpers, and a couple of Cat5 cables ranging from 0.5m and 1m patch cables to one 4m cable for me.