With a lot of help from 3b1b's videos, I wrote my own code to generate this Fourier series gif of my avatar!
Got the idea for this mnemonic from someone in this subreddit quite some time ago. Finally learned some Manim and visualized it!
Animation of Line Integrals of Scalar Fields with 3b1b's manim. I've also made a video on it (Link in the comments), would be glad to receive any feedback.