A rechargeable flashlight or lantern is a must for prepping, and comes in handy for many non-emergencies as well. When the electrical grid is disrupted and the power goes out, light to see by is the key to ensuring all other necessities are able to be met. Below you'll find a good variety of rechargeable LED flashlights and lanterns with a range of power sources - batteries, built-in solar, USB, and even hand-crank.
Many of these emergency lights have a flashing mode to signal for help, and most have adjustable light levels - great for conserving power. Some are even waterproof and buoyant. And nearly all of these rechargeable flashlights and lanterns double as a charging source for small USB devices like your phone.