These are some interesting science experiments.
They show you how to make a Leyden jar which stores electricity)

(Warning: several of the links on this page direct you to YouTube, over which I have no control)

Ryan’s World
(Ryan’s World is for younger children. The next two videos are for older people.)
Be careful … as high voltages can be produced with these experiments
Here’s another very similar experiment     …and another

If you want to find out more about the science in this experiment look up Leyden Jar Leyden Jar Battery  .

Franklin’s kite experiment (click for larger image)

Benjamin  Franklin used a Leyden Jar in his famous kite experiment  … and, by the way, Benjamin Franklin did NOT discover electricity, neither did lightning strike the kite.