If you need a super simple volcano recipe, it doesn't get much easier than this. Prep is about 3 minutes, and there is no clean up necessary. Easy Baking Soda and Vinegar Volcano Eruption for Kids by Preschool Inspirations
I like the idea of using a tension rod between the two shelves for a curtain to create a stage for puppet shows or talent performances or hide things before company comes over! Plus I'm pretty sure everything here is from IKEA!