My Dad told me and my friend, when we were in our early teens, to find out about perpetual motion, I think it was for two reasons, 1. Keep us out of trouble and 2. Make us think, we had great fun trying loads of different ideas, we found loads of things out, after a lot of messing, I got hydrogen from water and just a few volts, we spent weeks making lots of small hydrogen generators, once we had the optimal voltage to output, this was in the early 80`s so the only information we could get was from the library, but it was well worth it, we didnt store the hydrogen in any way, it was just what we had in the rubber tubes, and adding a small diameter metal nozzle outlet and a one way valve (the only thing we brought), it fired up with the first match, my heart was racing, so back to the library to get as much information as possible, we added an oxygen nozzle, took us ages to get it in the right position, once it was we were cutting sheets of steal like butter. Then we started on gun powder and black blasting powder and we even got the school to let us make it there as our science project for a heigh percent of our grade of our exam, Im now 52 and never stopped messing about, even trying things that you think that no way will it work, ok 90% does not, but the 10% you get something, even if its not what you expect, Anyone who is interested in tinkering about please do it, stay safe, but have great fun, I still am ;)