Sure, you can pick up some knock-together set of shelves, but built-ins provide so much more than just a place to stash your stuff. Made to rise ceiling high, create an alcove for furniture, or wrap an existing nook, they can add style, charm, and architecture to an interior, all while offering custom storage and display space. Here, seven ways to make them special. Bookcases arranged to form a passageway and united with flat trim create a mini library, complete with a rolling ladder that beckons young readers to hunt for a good book on the topmost shelves. Designer Bret Franks came up with the idea as a way to add old-house character to a new farmhouse with a completely open first floor beyond this office space.