[PebblesRox]

This blog post [0] has a few more examples, and I like how the author's alligator calculator [1] translates from traditional notation into alligators.

[0]https://propella.blogspot.com/2011/09/yet-another-alligator-...

[1]https://metatoys.org/alligator/#!/(%CE%BBx.x)%20y