I am a huge advocate for solar power. I want all my gadgets, electronics, and car to be solar powered. At the moment, this is not possible, so I settle for the small things in life that are charged by solar power. The Selene stores solar energy to make soft, smooth light in the night. These solar tiles are waterproof, and will emit light for over 12 hours. You can find them in red, orange, blue, green and white colors. Perfect to light up walkways, parks, public places, and tourist sites. Source