2. We used about six milk jugs for our two-by-two-foot window. To make the template for the triangle shape, cut a piece of cardstock into a three-by-three–inch square, then cut it in half along the diagonal. Put a piece of rolled-up tape on the back of the template to stick it to the jug and cut its shape out of the plastic with scissors. Move the template around to get as many plastic triangles as you can out of each plastic sheet. We were able to get 10 to 12 out of each milk jug.
Photo By Susan Wasinger