Students had to first draw a grid on their paper (they used pencil then went over it in marker). I then asked them to draw a minimum of 6 polygons on the grid (not overlapping the shapes). They then had to color in the grid (alternating squares for the pattern). I had them do all the squares for the grid first, then they had to go back and fill in the shapes - opposite to the pattern they did for the grid.
There you go - it was quick and easy - and integrated math - and most of my students finished it up in one art block. Glad we squeezed it in today - it's been a bit since we got an art block in.