Its my dream to have a library ladder in my house someday. Floor to ceiling bookcases offer plenty of space to showcase a vast collection of books. A ladder gives access to books placed high on the bookcase.
Upcycling old desks to make a small office space with ample storage/shelves! Too bad I'm not crafty enough to make it. But it sure looks cool! If only they would let me paint the desks at work this color.
I wrote a whole post about swapping your bookcases for wall-mounted shelving. Wall-mounted shelving takes up less space, and can almost appear to blend in with the wall. Image from Stadshem, via Freshhome.