Although the author of this article doesn’t see that going “mouseless” is very helpful, I’d love it! The interactions would be the same, e.g., right-click and left-click, but you’d do it without the mouse itself. You’d need an infrared laser and an infrared camera and, I’m assuming, the software, to make it work. They say $20 — I’m in!
The video is a pretty good explanation and, yes, it starts with Tom and Jerry.