Doodling is extremely beneficial for concentration. Next time you see someone doodling in class, he or she could actually be paying attention. Studies show doodling increases your concentration because it stops your mind from wandering.
Combine your doodle with your photographs, as this artist does.
Anything you want to express? Do you usually take pictures with your mobile?
Now use those pictures as your canvas to exteriorise your feelings, your pains or your happiness.