Wolfram Kampffmeyer (previously) loves to play with paper. The German artist uses the seemingly simple material to create three-dimensional shapes and figures, often designing products that users can assemble themselves. His newest project, , PAPERorgan, is a fully functioning modular organ that is fueled by an inflated balloon. The instrument can run for approximately 40 seconds on one balloon’s-worth of air, and plays a range of notes depending on how each user chooses to tune and expand their organ.[…]

More: A New Modular Paper Organ Allows Users to Build and Tune Their Own Functional Musical Instruments