The Snapping Façade prototype explores a sustainable open-and-close mechanism based on local craft and computational mechanics. Without using additional actuation energy and complicated maintenance, users can participate in the dynamic movement of the building envelope for play, fun, and energy saving. The user participation promoted by this low-tech system represents the collaboration, coordination and connection engaged in our building environment. This integration between art value and use value presents a potential for the further development into urban shading, shelter, and low-tech dynamic façade for sustainable environment.