Nighttime Ninja by Barbara DaCosta is a unique approach to a bedtime story. It starts with a ninja carefully climbing over the rooftops to reach his mission objective. This is a very short story, and it is more fun if you don't know the ending the first time reading it, so I'll leave it at that. It is very child-appropriate.
The art by Ed Young is composed of paper cutouts. I like it, it's different. The contrasting textures work well with the ninja coming in over the house. The book uses dark shadows, which create a bit of an ominous tone at first, but it's a nice moonlit night, and not scary. This will appeal to young readers.