The sky's pretty much the limit here. The kids-plus-friends spent a couple of hours building geometrical shapes, buildings and towers, and even a pretty good attempt at a Y-Wing Fighter and the Death Star. I loved watching the wheels turning in their minds.
Although I tried to get rid of two opened bags of marshmallows this way, we found that the fresh, newly-opened marshmallows were much better for building things. The older ones were too sticky and weren't stable enough to hold the toothpicks.So they became the snack. : ) And no one complained. Thanks to Amy at The Idea Room for sharing this great idea!
Hope someone else enjoys this as much as we did!