As part of the Penn State Lehigh Valley Writing Project, I believe in writing in context with grammar. That being said, I strongly urge each student to have a Writer's Notebook Entry, and within it, they can keep all of their entries associated with any type of writing in class as well as grammar. As their teacher, I also keep a Writer's Notebook of my own that I share on a daily basis with my class.
For this particular notebook entry, students cut out and paste what an appositive is. The teachers instructs the students as to what an appositive is, and then, depending upon what the class curriculum is at the moment, appositives are then integrated into the classroom. For instance, if reading The Great Gatsby, a student can form 20 appositive-infused sentences, based on those particular chapters. The same goes for any other classroom, whether it is science, history, or English.
You can integrate this into ANY PART of your curriculum.
Not only that, this grammar entry can be done in ANY CLASS, not just literature.