This is the view of the study and the adjacent sitting area, with the front wall removed. The wall is painted red, like the wall in the sitting area. Since it is a removable wall I cannot put any heavy objects on it, but I made several semi-flat pieces.
First, I made a fake bookcase. It is just a flat piece of wood with rows of books cut from a magazine and "sideboards" of lolly sticks, which produce a sense of depth.
Then I made a sewing table, also flat, with a flat sewing machine and some other funny flat things I bought in a hobby shop - they must be for scrapbooking. Since the tablecloth and the rug match the furniture they create a sense of additional space.
This is the whole wall, removed from the house.