Here’s one to get the ball rolling.
This is just messing around with skew on a 20x20mm cube. Just manually flipping the slider back and forth. I haven’t even touched M290.2 yet!
While this is quite entertaining, I do have some results on a more controlled skew adjustment for a calibration procedure. I will share in a bit. If anyone skilled at designing calibration methods would be interested in helping design and test a skew calibration that requires no calculation at all, I am more than happy to share any scripts or data that would help.