I think someone could create a game about it , a game composed of story telling which as they progress they get to know more about different angles of bitcoin world which could be useful when they grew up 
I agree on your idea because kids like playing games. Nowadays they more tend to play trough the use of technology. If someone will make a game that contains about what bitcoin is this will be the step for them to know what it is. Kids right now are smart and intelligent they easily understand thing if they saw it in the game that they are playing.