This post is inspired by LED yard lights and Amazing Clear Cast Resin. Yard lights can be found at any hardware store. The lights I found have an on board battery and solar panel. The solar panel keeps the battery charged in the day and turns On the LED light at night by means of a photovoltaic sensor. At night the LED runs off battery power. They are easy to disassemble and re-purpose. It’s also easy to change the LED to any color.
Back lit with Solar yard light LED.