Freestyling: On guitar, piano, or a drum machine (or anything that has a beat) play a chord progression and allow the individual to freestyle. You can use a popular rap song chord progression and use the chorus section to structure the song. For example, Niki Minaj's Super Bass has a simple chord progression that can be used for freestyling and a short chorus section to structure the individual's freestyling.
Epic Rap Battles: A model after the youtube sensation, a way to build quick rapport with younger patients, and a new avenue of expression for young adults.
Free Style: Links to youtube backbeats to be used with free style rapping. No video will have words, only the instrumental tracks will be linked.
http://www.musictherapytunes.com/wp/?p=1081 A simple fill in the blank "old school rap."