So what lives inside the pre-order tree?

If you pre-order/early order Cottage Living you get a pretty tree with fairy lights, a little blue door and a window that goes on at night. The description also mentions that something lives in there and that we 'might never know' who/what it is. Now I'm assuming bunnies but I haven't seen one emerge from there yet, do they or is this perhaps a hint at some other potential tree dwelling occult that we may or may not be getting that rhymes with dairy.