Make a solar cell from a condom with this video tutorial. Solar energy is plentiful and better for the environment, so why not take an easily accessible commodity (like a condom), and use it to harvest the power of the sun. To replicate this hack at home, you'll need the following materials: 12 iron hairpins, 2 pennies (pressed before 1982), 2 electrical wires, 1 sheet of aluminum, 2 strong magnets, a condom, and mineral water. For more on making your own condom-based solar cell, watch this how-to.
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