Volcano Eruption Kit -- Kids Science Volcano Eruption Kit, Sculpture and Eruption your Own FUN Volcanoes. Experience the inner workings of Earth as you create your own volcano. Decorate the volcano by using sand the following the easy set-up instructions and watch it erupt! Contains 1 Volcano base tray, 1 Bottle of Citric Acid, 1 Bag of Sand Mix, 1 Bag of Baking Soda, 1 Plastic Tube, 1 Instruction Manual with Fun Facts.