Someone might beat me to this, but here are a few.

CA glue, medium and thin
Razor saw
Modeling knife /w several replacement blades
A bunch of T-pins
Wax paper
Wood filler
A flat surface thats big enough for a wing panel, at least.

That'll get you started on a kit. You might need more esoteric tools as you go, soldering iron, heat gun, covering iron, etc.