My students loved making these Recycled Robots. As inspiration for this lesson, I read the book Robo-Sauce, written by Adam Rubin and illustrated by Daniel Salmieri. I also showed students a slideshow of robots form the 1940s/50s and had them guess what power/job the robot might have.
Then, each student chose a piece of (square or rectangular) cardboard for the body of their robot and then created and attached arms, legs, and other parts to the body using oak tag. Students added facial features and buttons using bingo chips, buttons, and foam shapes.
Then students printed their robot two ways. First, by creating a crayon rubbing and second by painting and printing their robot to create a collagraph print. Students REALLY loved using the printing press.