Hmmm, how about this?
Good metric allen drivers or a set of good set allen wrenches.
Screw drivers that fit the screws as well as possable.
PITCH GAUGE! - very important
Locktite- Also very important.
some metric nut drivers. Not sure aht I use most but around 6mm, 7mm, 8mm, 9mm, and 10mm.
Ball link pliers - not needed but they sure do help.
ball link sizer - I've been flying since April and I just ordered one. not needed but helps.
Needle nose pliers - I love these!
Normal pliers -

old rags - always usefull
wire ties - for wires
Tylenol - When you have a porlbem you can't fix.
RCUniverse.com - VERY VERY helpful CANNOT do without!
15 pound sledge hammer - Last resort.