Let's start with something simple, the materials we will need are:
-Cardboard box at least 72 centimetres high and 35 centimetres wide.
-Cutter, pencil, 50 cm ruler and sticky paper.
First we will have to cut two rectangles of 72 x 25, one of 72 x 35 (this may vary depending on the size of the rectangle) and one of 72 x 35 (this may vary depending on the size of the rectangle). the size of the shirt to be folded) and one more 36 x 25.
Well, when you have this, you will be ready to assemble it, very well explained in this video.
Sketch for those who don't see it anywhere.