Yeah, I had a vehicle a while back. The front left rotor wore out after the brake pads wore out prematurely. I ordered 2 rotors as I thought the other would go soon. My wife found it in the garage and threw it out.
I also had headers installed on that vehicle and kept the regular exhaust manifolds. When I got a hole in one header, I looked for the old manifolds. Yep, she threw them out too.

I asked if she knew what either of those was and she said no.
New rule here is if you do not know, do not touch.