I was delighted, in December, to be invited by the Ellen Macarthur Foundation to make a design proposal for Ellen’s upcoming presentation at the Big Bang science festival in March 2012. The brief was to find an engaging and dynamic way of communicating the Circular Economy to an audience of teenagers. It was the perfect challenge and a great exercise in designing audience participation. We put together several exciting ideas which involved the audience creating the presentation content while Ellen took the role of conductor. Unfortunately our proposal was a little too ambitious for the timescale available, but we look forward to working with the Ellen Macarthur Foundation again soon to implement some of our ideas.