The first picture is a piece my house mate started (which was then screwed up and put in the bin.) The picture started out with only the outline of the octopus in the foreground and a pencil outline of the arm on the far right. I added to the drawing to turn it into an mechanical underwater scene. The second image I started then abandoned and a friend added to it until it became a doodled bird. The last drawing I drew a pen outline doodle before giving it to my house mate to finish.
