The only things you need is an empty plastic bottle (for example coca cola or pepsi), a 25x25cm big corrugated sheet, water, bleach, silicon and - of course - some construction tools.

The following picture illustrates how the solar bottle bulb works


Of course, this solar bottle bulb as shown above can only illuminate the houses when the sun is shining. But don't worry, we got a solution for the night, too! Easy to build, affordable, sustainable and eco-friendly!


The Nightlight is a bit more difficult to construct than the daylight, but it's still simple. We only need a solar panel, a battery, some electronic parts, tubes and a high power LED. How the Nightlight is build can be seen in the video below.