The first two are quite simply simile books with a simple story. The last two were much more fun for my kids to try to find the similes and metaphors as we read aloud.
After reading so many stories we made an anchor chart together. Each student had to come up with a simile or metaphor to place on the chart. I asked the class for the definition of each and wrote that very poorly at the bottom. Some did not get the idea of it very well, so I knew we needed a little more practice.
As a wrap up to the lesson/concept we turned our thinking to writing and how we can use similes and metaphors to better our writing. I had them describe a character or something that was happening using similes and metaphors. The rules/expectations: 3-6 sentences, a simile and/or a metaphor, neatness, color picture. Most of them did really well. Here are some samples.
EDIT: Here is my sample and the chart we made together. Overall I thought the lesson went great. It was actually part of my formal observation so I was very pleased.