I was talking to my husband who has been traveling for work to an industrial site, and he sent me a picture that included a "permanent magnetic lifter".
They look like this: https://www.magnet-sdm.com/wp-content/uploads/Permanent-magnetic-lifter.jpg
I had never heard of these and wondered how they worked - how is it possible to "turn off" a magnet without electricity??
I found a video where someone explains how this is possible: https://www.youtube.com/watch?v=PMma3OJUHhs
I got one of the smallest of these as a gift for my husband. This tiny thing is strong enough to lift 68kg. It's strong enough to lift me!
https://i.pinimg.com/736x/b4/01/24/b401240f2c83f2ba6d95b91f50432a40.jpg