There are two ways you can project an image on the wall without a projector. In the first way you can use a flashlight and a magnifying lens. Point your flashlight at the wall or projection sheet and place the lens in front. Turn on the flashlight. You can adjust the position until you get a clear focused image. Another way is to create a projector with your smartphone. You can do this by taking a cardboard box cut out in the form of a projector and fixing a mirror and lend inside along with a smartphone on top.