We went pretty heavy on the zip ties this year for wire routing... So heavy, in fact, that we got a "zip tie gun" - literally a small, plastic gun-like contraption. Stick the end in one side, and pump the trigger - it tightens the zip tie, and when it's tight enough automatically cuts it with a nice, flush cut so you don't have a small, sharp bit sticking out.
The gun was probably my favorite tool this year
