Not that I have an empty closet, but i do like this."Closet Office" - Turn your un-used closet/reading nook into an office space. Maximize the little space with lots of shelving and storage *LIKE CORNER DESK/nook & shelving for office corner
Lift-top coffee tables offer a convenient work or dining surface in the living room. If you don't want to buy a whole new, expensive coffee table, transform the one you've already got (assuming you have a wooden table).