Apartment Therapy does these great posts about "cool small spaces" and I usually check it out every year and I am always impressed by what some people can do with their small spaces. I have to admit that this year's entries were really amazing though! Have a look...
982 square feet
400 square feet
375 square feet
head over here and have a look at all of the entries, there are lots more creative small spaces!
all images via apartment therapy