I'm going to totally hack this idea for a VBS theme activity. Have the top box have sides of different hats, middle different eyes and noses, middle different mouths. Have kids rotate the boxes around to design crazy secret agents.
Wrap some baker's twine or other string around a wooden block to create a graphic textured stamp. -can also use rubber bands- Stamp on inside of paper bags from grocery store or paper that comes in mailed packages, use as wrapping paper.