There are places in this world where there is no light on the streets and on the way to toilets, where innocent girls are raped in the shadows. It's time to make a brighter today!

Make a stirling engine the shape of a lamp post. With the mechanics inside. Buried deep in the ground for the cold side. And black flanges to catch the sun on the hot side. Which spins a generator to produce electricity which charges batteries for LED lights and USB ports for charging other electronics during the day. Having more of them makes for a great wifi infrastructure as well.