I've created some looping animations to be used as banners on a moodle course. When thinking about possible animation topics, I remembered a childhood hero.
As learning a challenge it was interesting to figure out how to loop the ground, the particles and the material for the particles.
"KITT - Knight Rider" (https://skfb.ly/6CGBs) by thenerdybirdy is licensed under Creative Commons Attribution (http://creativecommons.org/licenses/by/4.0/).
My childhood tv show, Knight Rider.