The is an example of the power that modern solar panels have. The Biplane comes in kit form to be constructed and features a working propeller that is powered by solar panels on the top of its wings.
is a complete eco toy that allows children to experiment with different renewable energy sources. The kit includes a wind turbine, a solar cell, electrolytic cells and a hand-powered dynamo which can all be used to generate electricity. The generated electricity is stored in a built-in rechargeable battery, and the effectiveness of each energy source...
The Nano-Tech Water Drop Puzzle is simply a puzzle that cleverly exploits surface tension in water to allow you to use individual water drops instead of marbles or metal bearings in a toy.
