Today ecological problems are becoming more and more important, we have to think about alternative energy sources. This SOLVINDEN lamp from Ikea addresses this problem. His name is translated from Swedish as “solar wind” as these are the two things that drive him. It is an LED lamp that is charged by a combination of the lampshade rotating in the wind and the rays of the sun that hit the solar panel above. The solar panel also contains a sensor that appears to turn on the lights when it’s dark outside. It’s a cool solution for only $ 30 – there are no power cords and you can run them outside. The charging time is 9-12 hours in sunlight, but more than 12 hours on cloudy days.