Doodling is an activity that involves drawing or scribbling on a surface, often without any particular purpose or goal. The term 'doodled, e.g.' refers to an example of doodling, such as a drawing or sketch. The crossword solution for this term is 'DREW', which is the past tense of the verb 'to draw'. Therefore, 'DREW' is an appropriate answer to the clue 'doodled, e.g.' as it describes an action that is associated with doodling.