This game helps to teach children the names of facial parts.
It starts by dividing the class into two teams. Then draw 2 ovals shapes on the board. Then yell "Draw the teacher's eyes!" and the two leading students from each team run up and draw your eyes on the oval, Then yell "Nose!" which is drawn by the next two students. And so it goes. The student get a ball out of this as they have permission to make fun of their teacher, and your image can get to look pretty distorted. You can add other features, such as nose or ear hairs. This will also work if you want to do body parts as well. Just draw the basic torso instead of ovals.
Great fun for all levels.