Ben Jackson wrote:


Of course now I'm thinking paranoid thoughts about more elaborate toolkits
for the plane, and just how much such a kit would shift my CG...


I have a small kit about he size of a lunch box with:

Pliers: needlenose and vice grips.
A small open end wrench kit
A small socket set.
A multi-tipped screwdriver kit.
Duct Tape (although I regretted that one: long story).

Over the years, I might have added:

Safety wire, and pliers
A spark plug socke.

Depending on your plane you might throw in a few bulbs or
valve cover gaskets, or whatever you think you might need.

Has saved the day a couple of times.