When I was a kid, there was a childrens program called Big Windmill. Every night, I would wait to watch it on time. I don't know if it is still available now. Todays Origami features a windmill origami, which may be the first thing children learn. One of several handmade varieties.
Cut a square piece of origami paper, take the center of the square as the point, and then fold the four corners in half along the other diagonal corner until a cross mark appears. Cut about 2/3 of the four diagonal corners along the crease, and divide it into four Make a small hole in the corner, stack the four corners in order, fix it on the wooden stick with a pin, and place it under the air outlet, so that the windmill can rotate.
