I remember learning this and thinking it was so cool. Then I realized how much effort it takes to lay a shirt so flat and straight on a flat surface in the first place, and I went back to my “grab the shoulders, shake the middle away from me, bring them together, tuck sleeves in while folding in half” way I’ve always done.

Half the work of shirt folding is getting the shirt to a known orientation anyway, I much prefer letting gravity do the work here.

Interesting that this is referred to as Japanese shirt folding. This is how I learned to do it decades ago, and there was no Japanese attribution at the time. I wonder if it is claimed (by whom?) to have been invented in Japan, or if it's just because the video is in Japanese.

Exact same video where I first saw this. I love the audio.

and folding plastic bags into triangles for storage

And ranger rolling your t-shirts:

https://www.youtube.com/watch?v=fuD-ZZydsVg