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.
create a couch out of bench cushion and pillow mats. add two bolsters and some large pillows and you have an easy to put together and take apart piece that is comfortable and versatile. love the deer and owl pillow and things.