Some more items to keep handy while your in your plane shop or at the field....
At least 5 inch pair of hemostats. Better if its 7 inches. Boy do these come in handy!!!
Electrical Tape. When I connect the rx battery to on/off switch's connector, I wrap both plastic housings together in order to prevent one connector from coming loose.
Spare silicon tubing (I keep mine in the flight box).
And here is a tip on control rods which attach to your control horn and servo. I have used these type of quick connects. Don't use them on elevator/rudder or ailerons. I have lost a plane because of the tightening screw coming loose. The best thing is to use
a threaded rod with either a Sullivan metal clevis or plastic clevis on one end and a zee bend on the other. I've even had horn keepers come off (this past sunday on my Space Walker).

Dave...