Solar toys are not only fun, they don't cause any harm to the environment by filling landfills with batteries. Batteries contain chemicals that, when the batteries are thrown away, can leak and poison water supplies. But buying your kids solar toys ensures that you will reduce your carbon footprint by using the sun's natural energy to power your kids' toys. The best solar toys will run for hours even after the sun has gone down. Few people will have seen toys like this, so the best thing about them is the fun you'll get showing them off to your friends.