[sithmonkey13]

Ethernet and Ethernet Crossover cables, in sections of 1ft., 5ft., 10ft, and 20ft, for tethering the robot, and connecting the PC to the router
PWM cable making kit- We got last year, and it made life a whole lot easier
Craftsmen brand hand tools (wrenches, screwdrivers, hammers, etc.) Not only do they last awhile, and are infinitely useful, the warranty makes them a must
Electrical tape and Duck tape
Multimeter
Several external hard drives, for pictures, movies, code, and back-ups of all that was previously mentioned
Internet connection in your workshop, for quickly checking CD
Safety glasses and gloves
Zip ties
Cathode tube kit, for retrofitting "street glow" (under-body kit) on a robot after the competition, so it looks cool for demos