I remember as a child watching an episode of some version of battlebots, where a competitor had an articulated grabbing arm on top of his robot. The arm had, I believe, two articulating joints and then an articulating grabber/jaw at the end. To control the arm he had made a small 2d model of it and could simply move that around on a clipboard like backing, and it would map those movements to the servos in the arm. I was blown away by how intuitive and simple of an interface he had made for this contraption that I imagined would work with a complicated series of levers similar to those used by backhoe operators. I credit this in no small way with inspiring my ever-persistent need to automate as much as possible in my adult life.

EDIT: If anyone has any idea which episode of what show this was, I would be very excited to watch it again