In order to make a penny battery, you will need:
-3 '2cm paper towel squares
-Vinegar and Salt
-1 LED light (any color) with positive and negative wires
First, mix the vinegar and salt into a solution.
Once mixed, dip the paper towels into the solution.
Then, make a stack of the collected items in this order; nickel, penny, paper towel. Repeat the process and youll have one stack of the collected items.
Once done, place one LED wire on the top of the stack, and the other on the bottom.
If done correctly, the LED should light up.
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