When preparing for my Cause/Effect essay, I searched my family photos and the internet for images I could use.
These could easily be for lessons. (I have my students create Multi-Flow Maps for each image. They can do it in cooperative learning groups or individually.) They could also be used for a bulletin board. (The pictures could be placed on a bulletin board asking the students to make predictions of different causes and effects. Or you could have the students make theories and display them near the pictures.) They could also be used as story starters ideas.