You can recreate a famous Lichtenstein artwork using markers, sharpies, and colored pencils.
OR- you can create your own Onomatopoeia drawings.
Pretty easy formula: Word, Burst, triangles, cloud! Or, more specifically- follow these instructions..Make sure that when you are drawing, you are adding a variety of sizes! Make some triangles and curves small and others large. Click on the picture and the directions will be in the caption!
Or- you can create your own speech bubble person! What are they going to say?
Draw a person in a comic book style. It can be like the girls above, or one of your own design. Add a speech bubble, and give them something to say. Color in like Lichtenstein would: primary colors, solid areas, dots.