https://eclipse.aas.org/sites/eclipse.aas.org/files/Waffle-Fingers_RTF_512x323.gif
Just cross the outstretched, slightly open fingers of one hand over the outstretched, slightly open fingers of the other. Then, with your back to the Sun, look at your hands’ shadow on the ground. The little spaces between your fingers will project a grid of small images on the ground. During the partial phases of the solar eclipse, these images will reveal the Sun's crescent shape, as shown in the accompanying photo.
