Since you work at Desmos: is there any way to have animated variables start/stop based on the value of some other variable? Or functions that graph different formulas based on a conditional? Etc.

For example, variable X is continuously cycling between -10 and +10, but only when variable D is > 1. At my son's school, there is a kind of interactive demoscene going on using Desmos (the kids believe that the school cannot block Desmos from the Chromebooks, therefore they will always have it available).