We added a shelf for easy access and secure storage of the books we bring on the road. There’s a small lip on the front and rear edges of the shelf so the books don’t move while were rolling down the road.
There is an added a support block under the sink (behind the false back) for the right side cleat. This is needed as the wall there is just 1/4” luan, not strong enough by itself to support the weight of books.
In the future I may update this area to do what the McNeece’s did, which was to add a full cabinet and a two drawers to the area. But for now we store a sewing machine under that shelf, so the open space is a nice general purpose area.