Songwriting for the younger listener

A few weeks ago, at the Sunday market, a father and son, regulars at the market came by and sat and listen to me play a few songs.  I've know the father for a while now and the son, well since before he was a person.  I decided to try writing a song for the little guy and it ended up coming to be fairly easily.
"Mika's Hot Air Balloon", was inspired by a paper cut out piece of artwork that Mika had just made.  It is a story about a boy who loves to imagine floating up in the air in his hot air balloon and what he sees as he travels around the world, all the while never leaving his bed, cause it's all in his head.
This past week I played the song for a bunch of little girls who came by the market and they seemed to like the song and dancing to it.
It's a very satisfying thing to have written a song that kids respond to.  They are honest, and if it doesn't work for them, you'll know it pretty fast.

From a post by the market manager.  That's Mika and his dad.
It's not the size of the audience, but the caliber!