Tiny Art Director is the name of a blog about a father who asks his toddler daughter what to paint, and then paints it! Her requests are pretty hilarious ("a dinosaur eating a baby!"). He also includes her critique and commentary with every piece ("He's just going to be nice to that baby he's got in his mouth"). The artist is coming out with a book as well, with more of the same.
I'm tempted to ask my neighbor's little toddler what I should write my next story about!