I also got so bored in training that I started my own manga or something. Fly, Samurai Ninjin, fly! (Yes, "ninjin" means "carrot"). Don't ask me why. I haven't even doodled in years and years. Surprisingly, though, I seem to have some artistic talent.
Just some.
At least at drawing carrot warriors and rabbits and such. Stick to your strengths, say I.