`50 Things to Do Before You're 11 3/4' encourages kids to do everything from flying a kite to tracking an animal. Now there's a whole new set of challenges specially designed to appeal to their hardwired love of all things messy. From painting a masterpiece in mud and making a wormery, to planting their own garden and racing boats on puddles, there's hours and hours of splatty and sploshy fun - together with tips on how to clean up afterwards!