There was also an intriguing sand that had been treated with a water resistant coating. Rayan was interested in that one, and commented that it reminded him of the way water doesn't seem to "stick" to leaves. He probably learned more science wandering in and out of the kitchen that morning than he has all year in school.
Once we'd gone through the basic mixtures, Morgan wanted to explore some on her own. We had some of everything left over, so she had a good time making mixes of mixes and squishing everything together with her fingers. The last pic shows her trying to mold the resultant goo into shapes with an old block-sorter toy. That didn't work so well, but maybe she'd like to try it again with the new clay.