[gwern]

An idea the website could borrow from video games is removing elements after a while, like _n_ page views. (You can store the state in cookies, LocalStorage, or perhaps track server-side by IP+useragent.) The reader enjoys the dancing jelly for a few pages, and then as it gets old, it goes away automatically.

(On Gwern.net, we call this 'demo mode', and we use it to hide some UI elements after a certain number of interactions or page-views, under the theory that if you've, say, uncollapsed a collapse region a few times, you've gotten the idea, and you no longer need a big obtrusive text label saying 'click or hover to uncollapse'.)