Few things to add that I didn't see mentioned yet:
- Pneumatic tubing cutter - will save you hours of fixing leaky pneumatics from crooked cuts (one may be included in the KOP IIRC)
- A good ratcheting socket and driver set with an extender
- Quick-grip clamps
- Heat gun - for heat shrink tubing and bending lexan
Also try to get as many of the popular sizes of wrenches, allen keys, drill bits, etc that your team will be using. Not a day went by on my old team where someone wouldn't ask "Who has a 7/16" wrench" or "What did you do with the 1/4" drill bit". Things will get misplaced or simply two people will need to use a given tool at the same time. The less time you spend looking for tools, the more time you spend building robots.