Another would be to use objects and incorporate sound so that whenever the user clicked them they would have their own unique sound. This could be in the form of animals on a farm, the forest or ocean, and so on. I would like the user to be involved somehow, though I am not quite sure how that will be integrated.
Regardless of which route I take, I would love to hit the user with feeling through the use of music, sound, visuals, color, etc. as mentioned in my LookingOutwards-12 post.