The bright yellow lid turned into a big happy face, once we added the mouth, nose, eyes and eyebrows. Each time the bell rang on my timer (every 3-5 minutes) the student received one part of their happy face, if s/he was working hard with smart fingers and paying attention to his/her work. Some students could even roll the painter's tape into a circle in order to stick the facial features onto the yellow background.
Nice change from simply drawing a smiley face on a sheet of scrap paper.
