The lesson
Launch a creative tool with an illustrated character using the interface as her materials, and keep real UI to glimpses.
An illustrated film. A woman in a red top, white trousers and orange boots stands against flat violet with a small sun and clouds, then walks. Another scene turns the world into rolling gradient hills, with translucent interface panels, a toolbar and a selection box with corner handles floating around her.
Don't copy the character or palette. Keep the idea of drawing the product's own controls into the story world, and use the product itself sparingly.