Today I was thinking about what to declutter next when I had an aha moment:
My key box!!
There are keys in there that came with our house and that we have never used. Now, as far as I can tell, I have the keys to every lock in the place, so I don't have to worry that these keys might come in handy later. In fact, we have changed some of the locks, so these keys might not have a match at all anymore.
I was able to remove 17 keys.
Tomorrow I'm going to take them far away from my house and its locks and throw them away.