When I'm not lightsabering, I restore and repair vintage guitar amplifiers. I use this same username across all forums, in case anyone wants to stalk me.
Anyway, I get in weird parts all the time, and I play the "parts game" with my wife - I hand her a random part, say "parts game," and asks what she thinks it is.
I got my mystery chunk piece in, handed it to her, and with zero hesitation she says "looks like a construction boot traction thingy." My mind was completely blown. "Yeah, my mom is obsessed with shoes so I've looked at tons of stuff. Why?"