I just assumed that the people that use them are nasty slobs and throw them down on the ground
I’m betting they’re trying to trip the wire on those old acceptors with the wire that a quarter actually pushes down. I can’t imagine there’s over a handful of those things left.
The paperclip is just bent down at ~60°. It slips right over the plastic and I can pull straight out on it and trip the coin switch. I don't think the floss pick will work, it's not even long enough.