[PAR_WIG1350]

The only tools you absolutely NEED in FTC, in addition to to what you have from FRC are:
-->A lot of small hex keys, color coded if possible, The tetrix system uses no fewer than 3 or 4 different sizes, it is really annoying.
-->appropriately sized nut drivers (thankfully, tetrix only uses one size of nut. Nut drivers will make assembly much quicker.)
-->sheers for cutting thin plastic sheet (great for quick additions)
-->a heavy duty hole punch for making holes in the plastic sheet so that it can be zip-tied onto the robot.

As far as materials are concerned, you should invest in tetrix shafts and nylon spacers, you can hardly have enough. Also, it helps to have a few sheets of (insert favorite, non-reinforced thermoplastic here) in .125" thickness (that is the max allowed thickness) or less for both prototyping and use on the actual robot.