We are waiting for the coming season, the spring.
I want to grow some tomato on my balcony. So i seed many different tomato sort. All of them sprout and I have to prick them into a pot.
Because i had not enough small plant pots i made some of old newspaper.
How i did it, you can see in this instructable or in the video, where i explain it in German. https://youtu.be/ihZBykvZeqA
The size you need depend on the size of the pot you want to make.
I just cut one page of the newspaper height-wise in half.
You want to have a sheet long enough to fit at least 5 times the diameter of the pot. The height has to be approx. twice the height of the pot.
The fastest way for me was to fold the newspaper and use a knife for cutting the paper.