This 6 pack of lights is great. You can hook them up almost anywhere, fence, gutters, deck, wall, etc. All you need is to have them get direct access to the sun to charge then they run for hours all night once its dark outside. These give a great amount of light for being so small and lightweight. Pretty much maintenance free, just hook them up and they turn off and on on their own.
https://www.amazon.com/KASUN-Gutter-Outdoor-Waterproof-Driveway/dp/B07D21STQ9