Skip the hassle of wiring and long cords outside and harness the power of the sun instead! These modern solar lights from Ohuhu automatically turn on at night and shut off to charge at dawn. Push the stakes into into the soil, and never worry about them again. Rain and snow are no match for the solar lights' weather-resistant design, so you can leave them up all year long. Available from Amazon; $22.99 for 8 lights.