Second graders have spent a couple of weeks now (I see them every day) on art of Central and South America. Here, we learned about the Chilean Rainsticks that the Aztecs used to "summon the rain." Students constructed rainsticks out of paper towel holders. They put tin foil inside the paper towel roll to slow the flow of the beads inside. This mimics the cacti needles that are punctured into the authentic rainsticks. I let them "have at it" with all of my craft stuff. They loved it!!!