I refer to Leedskalnin's Perpetual Motion Holder:
http://www.leedskalnin.com/LeedskalninsPerpetualMotionHolder.html
This guy had a strange theory about magnetism, a kind of mistic, not really part of scientific world.
https://en.wikipedia.org/wiki/Edward_Leedskalnin
http://www.leedskalnin.com/
Interesting is the simple device which can be replicated, named Perpetual Motion Holder. Here is a video about it:
https://www.youtube.com/watch?v=832qz3s1M-s
How the energy conservation does apply here?