Some of my sister's friends received a huge shipment of dry ice for their lab, and didn't need it all. They enjoy DS and always follow his stories, especially about science. When they heard we'd be visiting over the weekend, they asked to come do a science experiment with DS. We told DS to pack his safety glasses but didn't say why. When everyone arrived and he was told what they'd be doing, he was speechless with excitement. Pumpkins were carved first. Then he put regular ice in one bowl of water, and dry ice in another. And then he put dry ice in pumpkins and poured water over it. Later in the evening, the cousins arrived, and he repeated the experiment for them, explaining everything as he went. What a great experience! DS was so thrilled! Here are a few pictures, hopefully without too much face, so you can see the fun. :D