You can fold T-shirts really quickly and neatly. Since this is very difficult to describe in words, here is the video to learn it yourself and see it with your own eyes. Roll film.
Instructions on how to fold a T-shirt really quickly
https://www.youtube.com/results?search_query=t-shirt+richtig+schnell+falten
Good luck trying it out yourself!
Read also: Tips for ironing – no more wrinkles
Photo by Sabine, meinhaushalt.at