Dominic and Katherine went to Edinburgh as a part of the International Book Festival! Katherine and Dominic (they wrote the book!) had an afternoon of invention fun! Find out more about the session here. Find out all about the Handbook here. This video is hosted on a service that uses statisticstracking cookies.These cookies are currently disabled - to view this video, you will need to consent to and re-enable statistics cookies in your Cookie SettingsEnable all cookies