MEMO (Meeting Monster)!
Which is the best time to doodle out a strange stuff? If you are in a class / session / meeting / seminar / phone call which makes you bored, there is no other best time to take your pen and make your hands free on a paper. You wont have any control on your hands because your half mind will be attending (or pretending ) the class or what ever. Somany times I experienced cool results. Here is one of my meeting doodle which I drew behind my note pad. And here is the final result!