Green Flag. (A Pen project - ie. not using costumes) I didn't really know exactly what a Whirlygig was when I coded this in 2018 but the word jumped into my mind. A Google AI defintion of Whirlygig: "A whirlygig is an object that spins or whirls, but most commonly refers to a wind-powered toy or garden ornament featuring a spinning propeller or figure".
3D Tutorial Studio: https://scratch.mit.edu/studios/5040029/ 24 of my Best Polyhedra projects Studio: https://scratch.mit.edu/studios/50595731/ Huge thanks to @TheLogFather for his "Faster Triangle Filler" https://scratch.mit.edu/projects/24828481/ 3D Rotation theory from Wikipedia: https://en.wikipedia.org/wiki/Rotation_matrix