When DS was little, we "wrote" books with actual stories to them. One was about a duck and a pond. One about the life of a rock. At first, I wrote the words, using words they knew and maybe expanding by using rhyming words like hop and plop and stop once he knew one of the "op"s. He would say what the picture should look like. I'd try to draw it, and he'd color it. We'd review all the ops, I'd read it to him, and then he'd read it. A few days later, he'd read it again, and then they really were reading. He is 9 now, and oddly has kept our entire library of "books" that we wrote. Eventually, he was ready to read "Hop on Pop"
I love this idea!