So, by clipping the selfie camera into the wall next to the mirror bathroom in the manor, I discovered there appears to be a key hanging in there, as well as the fact that the remaining screw is a separate entity, implying it can be removed. I was wondering if anyone has found a screwdriver around the manor, and if not, maybe a dev could weigh in if this was a scrapped puzzle element or not?

Ah yeah, this is actually left over from the mansion asset I got on the unity store, it doesn't do anything!

You can also find this by clipping entirely out of bounds (wedge yourself in a jumpscare door while using the mushroom). I came here to see if anybody else had found it, or if I could find any info on the nearby keypad.