One of my favorite movies is The Sound of Music! And, many students at least know the song even if they have never seen the movie. So, this has become one of my favorite grammar lessons!
Teaching students about appositives and appositive phrases can be difficult, but by teaching the concept with a song, students will quickly learn how to identify an appositive and differentiate between an appositive and appositive phrase. Using the lyrics to "Do Re Mi", which just about everyone knows, you can dissect the language down to what kind of words, phrases, and clauses complete the appositive phrase, or you can simply introduce appositives. You may also want to use this as a lesson on commas that are used to offset nonessential information. The song provides so many opportunities to teach grammar to students at any level! I also make the lesson engaging by showing the clip from The Sound of Music to emphasize how language is interchangeable.
You can follow up this activity by asking students to write sentences that include appositive phrases, you can provide them with another song to identify appositives and appositive phrases, or you can provide a piece of literature and ask students to locate details about characters or setting that are revealed in appositives and/or appositive phrases. Believe it or not, Disney stories are overloaded with appositive phrases and a fun way to identify appositives.