I have absolutely no idea what that is. I found it on the floor, and couldn't figure out where it is from.

The house is still standing, so it clearly isn't an integral part of the foundation. We still have power and heat, and the internet still works (fitfully, but that's a discussion for another day).

Admit it...many of you have a jar or drawer that has several objects of unknown origin and function, yet you are constitutionally incapable of discarding them!