>>30864
Its a fair point that some of these devices could be over unity devices making their own power

There are many types of motors
I'm pretty sure a lot of variations can be built without pre made parts, but it takes a lot of effort
Otis T. Carr's design makes use of electromagnet interaction
I have a bunch of neodymium magnets to experiment with

I made a new kind of board here;
https://anon.cafe/server/
Each thread has its own theme, I think its enough to have 1 /hover/ thread on it at least for now