I know the home decor magazines tell us to decorate bookshelves in our home with interesting objects, not just books, but in my opinion, bookshelves are mainly for books. And if there is space on the shelf, that means there is room for another book. At least that is the way it is in this house. Here is a sample of some of our bookshelves.
Books in the entryway.
Books in the living room.