I own a few very old mercury thermomenters.(I like to collect all kinds
of very old things) When I was a kid, I played with some mercury too,
mercury will shine up old coins real good.(mercury is a liquid metal) I
haven't checked the old 1940s Honeywell thermostats on two of the walls
in my old house (house was built in 1947, it has asbestos shingles on
the outside walls) lately, but I think they have mercury switches.

I owned a Daisy pump action BB gun when I was a kid.I still remember
sometimes the pump slide (whatever it's called?) action catching the
palm of my left hand in that slide.It hurt too.
cuhulin