Magnet fishing is the coolest hobby you probably didn't know existed

It sounds entertaining, but at the same time I’ve gotten the impression that some magnet fishers find stuff and then leave piles of metal crap in/around the trash cans at the places they visit.

I suppose that’s better than throwing it back, and I’m certain Not All Magnet Fishers, but disposal (and driving a subcompact) is the main thing that’s kept me out of the hobby.