Paper Models That Rock!: Six Pendulum Automata (Dover Origami Papercraft)Simple directions and complete materials make it a cinch for crafters ages 12 and up to construct these charming paper models. All you need is a few pennies to make them movethe weight of the coins will help set the models in motion. Six automata include a nodding donkey, a gift box decked with a fluttering heart, a rocking robin, rolling bones that will tumble down an incline, a pair of tapping feet, and a tail wagging dog.