I've had my M20J for almost 3 years now and have on occasion kicked myself for not bringing simple to the airplane that might have avoided a return to the house unnecessary. Anything you all can think of that has saved a flight or two? I am thinking there might be other things that I should add I haven't thought of, so thought I'd throw it out here for discussion.
Some things I've to get started:
1. screwdriver (Phillips and Regular, or better a driver with interchangeable tips)
2. AA batteries (for ANR headset, portable radio, etc)
3. GE 330 bulbs
4. Spare quart of oil, and funnel.
Dave