According to Wikipedia, a doodle is a form of "unfocused or
unconscious drawings made while a person's attention is otherwise
A doodle is an unfocused or unconscious drawing made while a person's attention is otherwise occupied. Doodles are simple drawings that can have concrete representational meaning or may just be abstract shapes.
Stereotypical examples of doodling are found in school notebooks, often in the margins, drawn by students daydreaming or losing interest during class. Other common examples of doodling are produced during long telephone conversations if a pen and paper are available.