I promise you this is the coolest and most dramatic film (~ 2 min) about water droplets that you have ever seen. Probably much better on a monitor (sound on) than on a phone.
Euler’s disk, (pronounced ‘Oiler’) which can spin for an absurdly long time, and seemingly defy gravity by increasing its axial precession as it decreases its azimuthal rotation. It appears to break physical laws (it doesn’t) but it truly shatters expectations.
Slow motion video (30k FPS) of a tuning fork inserted into water. I wish this had sound, you’ll have to imagine the tuning fork hum/ring.