Why not spend some time with your family experimenting? Start with the Daylight in a Bottle project and learn how to harness the power of natural resources. Star net provides this two page explanation of just how you can use energy from the sun and a water bottle to read a secret message from a friend or light up a room : Daylight in a Bottle.
If you’re fond of video help this is a how-to video explaining the project: https://www.youtube.com/watch?v=8fXtbXXP9po&feature=youtu.be.
Finally here is a short video that shows how what you are doing has been used practically in other countries: https://www.youtube.com/watch?v=cQCHvO2H0_0&feature=youtu.be
