I've carried one of these lights everyday for YEARS. It uses a AAA battery so I don't have to recharge it. It's tiny and bright enough to handle most situations. I was asked on a podcast one day about my single most-used piece of survival gear and this is it.
Chemical Lightsticks
In my book ASHES OF THE UNSPEAKABLE, a lightstick saves the day in a creative manner. They are useful prepper gear for the Bug Out Bag, the Get Home Bag, or even for your vehicle. As I write this, I am thinking of a story I heard on the news