Work lights are temporary, portable lighting units designed to be used by personnel in dim or dark work situations. Their manageable nature lends their illumination to virtually any task where daylight or artificial light is insufficient to reliably complete a task. They can be mounted, hung, held, or magnetically affixed to provide consistent lighting. Many designs rely on battery or an AC outlet for power, but some may utilize a gas canister or hand crank. Bulb options include incandescent, halogen, LED, fluorescent and other types. These lights are meant to be inexpensive but reusable.