This is a functional cardboard piano made by 10-year-old Hannah Jenkins as part of a recent Cardboard Challenge that Colorado kids in the Cherry Creek Schools took part in. The Cardboard Challenge is an annual event hosted by the Imagination Foundation, which grew out of the Caine's Arcade short film, with the goal of inspiring and fostering the creativity of kids like Caine and Hannah worldwide. Take part, learn more, and support Imagination:
http://cardboardchallenge.com
http://imagination.org
http://cainesarcade.com