Can you give an example of a quaternion computation that would be useful in a calculator? I would imagine that quaternions and GA are best suited to have a grap

Can you give an example of a quaternion computation that would be useful in a calculator? I would imagine that quaternions and GA are best suited to have a graphical output, ala https://enkimute.github.io/ganja.js/examples/coffeeshop.html https://enkimute.github.io/ganja.js/examples/coffeeshop.html ?