What an awesome library! You could do this in any small room of the house. put glass french doors with curtains, and a few good chairs/lamps- would feel like Moms library. I like the colored shelves=) - Amazing House Design
This is a neat reading nook. I like the idea of curtains in place of doors, especially since this is a kids' room. Keep an eye out on them, but they feel like they still have privacy. This is a great idea for a playroom, too.