Built in wine nook
Bed in a closet
Slanted ceiling closets
slanted ceiling - for my closet room
library, window seat, great view
Wooden ladder bookshelf - wow.
Make use of wasted space under a staircase with built-in shelves. More ideas for small spaces: http://www.bhg.com/decorating/small-spaces/strategies/smart-decorating-ideas-for-small-spaces/?socsrc=bhgpin062512#page=5
Great closet design for slanted ceilings