Chaotic Pendulum
Here is a small python project that I made early in my career. It demonstrates a model of a damped oscillator as an animation of a pendulum.
The key take away from this model is how easily the movement of a damped oscillator can change for predictable to chaotic simply by changing the amplitude of the damping.
I haven't yet posted the code for this project for concerns of giving solutions to an assignment that is still being assigned in the class I made this.