Hehe
Yeah, the "bench physics". To avoid this, as the ESD-mat proved to be extremely useless, I got such a thick, heavy rubber mat with holes.
Quite pricey, but I love it. Acts like a dam to all the junk accumulating behind there and also keeps cut-offs, de-soldered parts and so on from scratching cases of equipment.
It gets cleaned out every few weeks, when enough crap is in there... will happen soon, I guess. Nice side-effect: Less of the stuff on the floor as it's kept in there.
I can only recommend anybody to get one of these, ESD-safe, practically indestructible, one bought for your whole life.