This illustration is really nice it shows a variety if different things and i really like how easily it gets the message across. Instead of the balloon containing nothing it has water with fish in which i think is a really good idea.
22 artworks with clever use of negative space. Could also work for Magritte style images. Eagerness, enthusiasm, idea and creativity is reflected through negative spaces which is familiar and makes sense.
Now HERE's an idea--regular painted mural during the day and glow in the dark paint at night? Why keep this to in the kid's room? This would be great in the bathroom at night, or as a more tasteful version of sticker-stars on the ceiling. Or in my room.