Here is a good Prepping tip concerning post SHTF lighting. Solar lighting is cheap and easy to use. Think of having a rechargeable flashlight, with minimal cost. These little suckers last a long time too. The picture show 2 different common types. The “Flashlight” style can be easily used as a flashlight, or in your BOA. The round style can be used as is at your BOA. You could also cover the back in reflective material (like aluminum foil) to give it more of a direction.