Built-in trundle bed...dream for an office/guest room.
Back to school project ideas: How to make a pencil holder or crayon holder via lilblueboo.com
Little room separated by drapes
take doors off closet, paint, create shelves, install counter for desk area (look at Menards or Lowe's or Fleet Farm for 'odd sized counters' for sale), maybe mirror part of the back wall for 'light purposes, install outlets for plug-in stuff, slide plastic 3 or 4 drawer bins under counter for storage of office/scrapbook/craft stuff...voila!
closet offices don't HAVE to have doors. Great design idea.
Cover bricks for bookends in beautiful fabrics that match your decor.