My 4 year old and husband had such a wonderful time with the Volcanos box. They spent one afternoon doing everything and keep asking when they next will arrive. The company also has great customer service. Our geode was hard to work with and when I asked them about it they sent me another plus a little bonus for our patience. I gave one less star for curation because we didn't expect the volcano to be so small and it would've been nice to have the colors be more realistic. We got blue clay and yellow food coloring. But my preschooler didn't really mind.