My kids have always been a little differnet when it comes to their ideas. For example they had to make a drawing of a dragon doing something and include background. Conner draws a dragon in a cave with a whole bunch of bones around him, Sarah on the other hand draws hers sitting by a campfire roasting marshmellows with his dragon breath. And then Nolan draws his sitting in a boat in the ocean fishing, and frying the fish with dragon flames before eating it.
So it should have come to no surpise when instead of a snowman my childern build a snow catapillar that you can ride.