The two most common types of lights that do not require hard wiring are battery operated and solar powered. Both types come in a variety of styles and applications and are available to purchase from many retailers, including Home Depot, Wayfair.com, Amazon.com and Costco.
For indoor use, battery-operated lights are the simpler of the two options to install. Models include push lights, motion-sensor lights and lights with conventional switches or levers that operate by battery power. Outdoor uses for battery-operated lights include motion-sensing lights and security lights.
Solar-powered lights are also available for similar applications as well as for more decorative functions, such as path lighting and garden lights.