Mommo Design has a bunch of inspiration for girly reading nooks. These quiet corners contain fluffy pillows, rugs, cushions, usually a canopy, and of course lots of books. I think the idea is very cute and I'd love to do this for my daughter's room.
Fort idea for where the rocking chair is now in D's room. Use a tension rod between the furniture and the wall to create a fort. What kid doesn't love a fort? This would also make an awesome reading nook!