How do electrons move, and can we store them for later use? I experimented with capacitors and made three of my own. Spoiler alert they did not work as good as the factory ones! Capacitors are fantastic to provide an energy source. I learned that homemade ones can take a charge but do not hold it long enough to be useful. In the future having safe, clean forms of energy is going to be very important and capacitors could be part of the solution.