At the back of the dining room area you could put a wall-to-wall bookcase filled with books. If you don't have that many books you can have a display bookcase where you place nick backs, a few books, some magazine, sculptures etc.
First Apartment: Build a naked closet on a bare wall of your bedroom. Hang a curtain rod from the celing and attach a snazzy curtain to pull to cover and viola! new, bigger, and tailored closet to your needs.Great idea for a place with no closets.