Get a tall cardboard box and cut a small hole in the bottom. Tape a piece of aluminum foil over the hole and prick a single neat pinhole in the foil. Aim the foil side of the box at the sun and hold the open end over a clean white surface, like a piece of paper. The pinhole should project an inverted image of the sun on the paper. Another way to see the partial eclipse is to look for accidental pinhole projectors, says Bob Stoller, manager of the Fiske Planetarium at the University of Colorado in Boulder.
Light leaking through closed blinds in a dark room can create images of the sun on opposite walls.
Also, for people in locations where there are still leaves on trees, the ground beneath the trees can become covered with thousands of projections of the eclipsed sun. Never use multiple sunglasses, exposed film or other jerry-rigged filters to look directly at the sun. These may block the visible light, but can let through dangerous amounts damaging ultraviolet light. You can also use special Mylar filters available at many telescope stores or planetariums, but make sure you obtain them from a reliable source. If you use one of these filters, do not use them with binoculars or a telescope.