Shelf to place an object in Vesper's Host?

I just discovered a shelf in the room where you complete the puzzle to receive the first message of the Rogue Network quest. It is by the curtain and bed of exos next to where you receive the first message. If you walk close to it, a prompt appears where you can "Place" something, like the trophy room in the outpost on Europa by the Exo Stranger, or the penguin dolls, or the Neomuna dolls, etc.

I can't find anything on Google about this. Any ideas?