Surprise Ride - Volcano Activity Kit Surprise Ride is a fun activity kit. As seen on Shark Tank! Did you know that there are 1,500 potentially active volcanoes in the world? Build and erupt your own homemade volcano. Learn the exciting science of acids and bases. Touch and smell a lava rock from a real volcano. Enjoy your tasty treat of freeze dried fruit. Includes supplies for two activities, a book, a snack, fun extras, and easy-to-follow instructions!