I am a puzzle person, and I think there is a strong case to be made for puzzles at a young age matching really good pattern-solving abilities. Those abilities have served me well my entire life, and if you can tie the puzzle-solving to other pattern-matching would make a good story. When I say pattern-matching, I don't mean visual puzzles necessarily. For instance, finding the pattern in the daily classroom work, to the point where you can predict what comes next with good accuracy. Finding the pattern in the way you solve math problems, or doing art.