The snails are back, and from March onwards they will be appearing in a green space near you. They’re raring to go, so this is a great time to have a go at No. 17 on your list of 50 things to do before you’re 11 ¾. Search for snails among rocks and plants, then make your own race track out of pebbles or sticks. Lettuce can help to encourage competitors across the finish line.