Sink in a drawer

This small-bathroom sink hides in a drawer (presumably it uses a length of flexi-hose for its drains connection). It's a smart space-saving design and it has the additional advantage of making it easy to pour water directly on the floor for cleanup (provided that you've got a floor-drain, of course) -- something common in many countries.

Make a Small Bath Look Larger

(via Cribcandy)