Random Words
Pick a random word + doodle it
Set a timer. 5 minutes is great.
Then doodle one of the words below (whatever comes to mind).
Variation #1: Doodle as many of the words as you can in the time limit.
Variation #2: Pick 2 words and doodle that combination.
Variation #3: Doodle as many combinations as you can in the time limit.