Emergency key
Although it is less common to lock yourself out of your car with electronic locks and ignition these days, it happens often enough that I keep a spare key hidden in our vehicles. Grant Thompson (King of Random) has a great YouTube tutorial on how to make a key-hold big enough for modern fob keys — the kind that contain a transponder that work at a distance. This is the crazy-strong magnet I used for our hidden key-holds. It is cheap insurance compared to a locksmith visit. — KK