I can't offer a photo, but will ring in with another option too.
I got to shooting old skillsaw blades as reactive targets, just hung them on some old copper electrical wire somewhere safe for lead splatter and rang the bell.
Ricochets have not happened as the blades suck up or deform energy of pellet.
Also a more musical version of this is the backing plate from a speaker - the bit with the tube that runs through the center on the back of the magnet - drift from the front will break glue.
Typically they have a mounting screw in them, so allow for center hanging as well, and have some pot metal weight to them.
Depending on the size of speaker sourced from, they have a range of "Ding" sounds easily heard out to 100yards (.22 anyway).
Reactive targets rock for feedback.
Thanks for posting this idea.