Animated spirograph on MANIM (python animation engine). Cool visual.
I animated this spirograph on dozen different ways, but this one looked the most interesting. I am not sure what animation class I did use (Write, WriteRandom, ApplyMethod(part.set_color), etc), as I continued tweaking it unstopabble (I was having fun). But this code produces very similar effects, you'll just have to tweak a little to get the same results.
If you don't know what MANIM is, here you have it:
https://github.com/3b1b/manim