In past issues, good uses for the Enneagram were found in:

History                    Spirituality           Business           Subtypes
Relationships        Medicine          Astrology         Graphology
Numerology          Chemistry        Homeopathy   Morpho-Psychology
Ayurveda                Oriental Diagnosis        etc., etc., etc. . . .
In time we will get to all of them and then some . . . Your contributions are welcome.