Here's two posters that I made during our last unit. One is for main idea and the other for cause and effect. Bear in mind that I'm no artist. I try to keep the illustrations simple and focus on the content that I want the kids to pay attention to. :)
One of my students pointed out that the Titanic was actually the RMS Titanic, not the SS Titanic like I drew! How's that for detail oriented thinking!
Sorry for the glare, but I do get them laminated because I move the posters around the room quite a bit. If they aren't laminated, they don't last as long!