Juvenile idiopathic arthritis (JIA) is the most common form of arthritis affecting children and teenagers, often causing joint pain, stiffness, and inflammation. The Molly Book was created as an engaging tool to help children practise their daily joint mobility exercises. Using the crease of the book as an interactive mechanism, it demonstrated how joints move in a simple and accessible way for young patients. The Molly Book was awarded Gold at the PM Society Awards.