Perhaps they can draw the person sitting across from them with colored
pencils and value drawing with regular pencils showing distortion a la
Botero. Maybe a seated figure with a still life. Or they can draw the person
across from them using elaborate dress and background such as Matisse's
seated woman. Have them show at least 5 different patterns on the outfit and
background. A whiteboard doesn't have to be white it can be paisley, plaid,
curved lines, dots, dashes, lines, etc.