I'm thinking of making a sand worm (head only) to go over the a/c duct (large industrial kind) which would be the body. So that when the a/c is on, the air will push a ribbon or some fabric around acting as the tongue, if that makes any sense at all.
What should I use? i was thinking paper mache as it needs to be light. Also thinking of using a large balloon underneath to get the initial head shape. Any tips or pointers? i haven't paper mache'd since I was a kid.