I really love this community idea and would like to contribute a floor to the tower in the form of a 'Borrower's Den'. This is playing off the idea that there are miniature people in the world and what their living space would look like.
I have been inspired by films such as Ghibli's 'Arrietty' and illustrators such as Emilia Dziubak. Below are a few inspirational images for my level of the tower. Watch this space for (probably slow) updates!