My kids have been having so much fun learning about opinion/persuasive writing and reading Mo Willems books.  We start the week by being introduced to the author using this video.  Then I talked a little bit about what persuading means and I read Don't Let The Pigeon Drive The Bus.  They were given a paper with speech bubbles to write things that the pigeon could say to get to drive the bus.  My higher students came up with their own using the style of Mo Willems and others wrote words very similar to Mo's.  Either way was fine with me, since this was a new type of writing I just wanted them to get comfortable.  When writing time was over we made a circle and they got to share their favorite words they wrote in one of the speech bubbles.  We worked on using voice and gestures to act out our quotes. 
On the second day I read Don't Let The Pigeon Stay Up Late then we used the same paper to write things that we say to our parents to try and stay up late.  These were hilarious by the way.  I had them share what they said with their writing partner at the end of our writing time.  During snack time and  read aloud I was able to fit a few more Pigeon books in that I found on YouTube.  I paused the videos several times so they could pair share schema they had about Mo Willems writing, text to text and text to self connections, and predictions.