More to explore:
Book display and window seat for a reading-friendly playroom.
window seat book shelves - love this idea for the playroom
kids room - bookshelves & window seat
I usually skip pins like this, figuring I don't have a space in my home that corresponds, but as I was looking at this one, I glanced over into our current play room (aka, "the train room") and realized that, sans the window seat and built-in bookshelves, this is EXACTLY what I have in my home. And I could do this someday.
upstairs, against the wall with new window. :) Playroom design with white built-in window seat and front-facing bookshelves. Great schoolroom idea.