This evening, our eldest son (13) told us "today, during the history lesson, the professor was only speaking and speaking, and my hands were bored of doing nothing. So I started cutting paper, while still listening to what the professor was saying".
Not sure if he was
really listening, but here's the result: a fractal papercut!
Fortunately, the professors know what he is capable of and let him doing this kind of things as long as it doesn't disturb other children in the classroom. And our son told us that other children barely paid attention to what he was doing, which is surprising considering the size of that thing, made with a 42x20 cm sheet of paper.