i am student of class 9 th,have got a project to do on simple working model on producing light energy help me?

Question

i want a small easy and a simple model for my project .i need things that are freely available and doesnt cost a lot.
Response me as soon as possible.

Answer 1

Build a battery from potatoes. You should be able to power a LED light bulb.

The details are explained on this website
http://www.unit5.org/christjs/Potato%20Battery.htm