[zakk]

exactly, i mean recently 5/32 is a magic number in FIRST but you never know when you need to disassemble a motor or something and need metric tools because it was assembled in another country.

i would definately go with a:
hammer
chop saw
good gloves (having flying metal embed itself in your arm is fun and all but gets old fast)
hex key set
taps
safety glasses
face shield
cordless drill (at least 2 batteries)
hack saw
screw driver
drill bits (drivers)
drill bits (for making holes)
computer for running programs
zip ties
electrical tape
wire cutters
crimpers
wire strippers
soldering iron
solder
duct tape

thats all i can think of for now

and always be open minded, and always think outside of the box
(thats the best tool you can have)