That's interesting. I think I'd been assuming the bottle alone was representing TSF and the doorway was tied with the child MP (looking up at his passed father) in representing TBOT, but perhaps it's meant to evoke things in both songs, much like the (pigmy?) elephant can represent 'the elephant in the room' (trauma aftermath) as well as 'memory of an elephant' for ANTR, TSF, TBOT, and TCOT – all songs where memory and trauma are essential to the lyrics.
I don't get the mouse, though. Is the elephant trying to hide from it by standing on the books?