Activity and Coloring Book. Welcome to Keeping Calm, an activity and coloring book featuring Playtime with Zeebu friends. This activity book contains exercises that focus on ways children can learn to regulate their emotions. The characters in this book learn how their body looks, and feels when it is calm and when it is not. Activities will encourage your child or student to make better choices during times of stress, and will give them tools they can use to help them remain calm. This 40 page activity book contains coloring pages, mazes, and playing together games.