A USB-rechargeable Cree LED flashlight for $21 would be a pretty good deal under any circumstances, but this one includes a seatbelt cutter, window hammer, and even a 10,400mAh USB battery charger. Plus, it includes IPX6 waterproofing, so you’ll still be able to use it if you drive your car into a lake (though in that situation, I’d focus more on the hammer than the USB battery pack).