Loadingicon: trippy looping gif animations to distract and delight

Loadingicons should loop, use a constrained color palette, and be fun enough to look at that they could distract a user while a computer or network churns away in the background.

Loadingicon artists frequent subreddits like /r/loadingigcon and /r/gonwild. Growabrain's Metafilter post links to some stellar examples of the form (my favorites below!).