Illustrated bedtime stories in children's books can boost creativity. The pictures inspire kids to think of their own stories or add to the existing one. For instance, in 'Goodnight Moon', the child can come up with their own ideas about what the objects in the room might be doing at night. It also aids in cognitive development as they start to understand the sequence of events in the story, like how the little bear in 'Corduroy' goes about finding his button. And of course, it helps with language skills as they hear proper grammar and sentence structure while enjoying the story.