Here you can read more about this tradition. M was randomly assigned a classmate, to whom she anonymously gave a selfmade gift on the 5th of December. Somewhere inside this selfmade thing a small present is hiding. The boyish girl in her class wrote down what she likes: hiphop, gaming, athletics, reading Donald Duck comics and more difficult interests to base a surprise on.
Thus more than a week ago M was brainstorming with both her parents and an idea came up. F and M made the first surprise ever made in our house.