One thing I do, particularly for my FAK, is put a piece of tape on it, & write the date. Every year, on that date, I change out the meds. Inspect all the packages of everything else.
Batteries I change nearly monthly on GPS, flashlights, etc, because they get used so frequently.
I have a 4 mile commute (jealous, huh), with a fairly straight drive the whole way. My major concern is normally me hitting a deer at 6 AM. Which, I can simply wander to the nearest house, and barter food for assistance <img src="/images/graemlins/wink.gif" alt="" />