Former Disney artist Arthur Millican Jr., maker of "exciting fairy house manors" built this excellent storybook style playhouse from found materials. It reminds me of the "witch's house" on Carmelita street here in Los Angeles.
If the storybook style appeals to you, here's a book about it that I like: Storybook Style: America's Whimsical Homes of the Twenties.
Whimsical Playhouse (Via Lloyd's Blog)