Hint: It's not clothes, games or groceries. It is a perfect small space solution...
For as long as I can remember, my dad has worked at least two days a week out of this converted closet, located in my parents' bedroom. Equipped with a desk lamp, a drawing board and every color of pencil imaginable (he's an illustrator), he's got everything he needs...plus the added bonus of a really short commute.
Though the yellow color scheme could use an update, I think some of his ideas are timeless. In particular, the curved laminate allows for a desk chair to be stored out of the way inside the office and the window allows natural light into what could be a fairly desolate space.
One side note: Dad is a compulsive neat freak, so even though he packs a lot of stuff in his space, I assure you that it's all neat and tidy and perfectly organized. If he had known I was taking photos, I'm sure he'd have trotted out the drawers of color coordinated pencils!