Willow was asking for science and robot kits for Christmas this year. She's gotten a few different kits and when we returned from our vacation she was excited to try and experiment. I think she picked the most involved one out of the 50 to choose from! We made the paper mache volcano then mixed the ingredients to make it erupt!
Lessons learned: (1) Kid scientists wear their safety goggles on their foreheads. (2) There's no need to measure. You get a better reaction when you just dump a whole bunch in!