• construction paper, cardboard, or crepe paper.
• string or cord.
Fold a sheet of construction paper in half. Draw a half circle on the paper, as in the picture.
Cut around the circle. Then cut an eyehole in the folded mask Punch a hole near the edge for the string.
Unfold the mask. Tie string through the holes. Or staple the ends of a long rubber band to the mask.
Decorate the mask with poster paints and bits of construction paper.