Pendulum-powered bobbing paper bird project with plans!
Here's a really clever paper project designed by artist/engineer, Rob Ives. The paper bird is powered by a pendulum in the base. When you move the box, even slightly, and the bird comes to life bobbing up and down. Rob Ives has created free plans for this project, complete with instructions and downloadable patterns!
Here where you can get the plans and instructions for the pendulum-powered paper bird project.