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.
Mark Frauenfelder is the founder of Boing Boing and the editor-in-chief of MAKE and Cool Tools. Twitter: @frauenfelder. His new book is Maker Dad: Lunch Box Guitars, Antigravity Jars, and 22 Other Incredibly Cool Father-Daughter DIY Projects