Strategies to aquire 18 credits and teach

[jb111]

Hi.  I just finished the Cybersecurity masters at WGU.  Might want to teach/adjunct different topics in the future.  Other than a full masters per topic, what are some clever (hopefully inexpensive) ways to acquire the 18 credit hours required to teach?  Is regional accreditation required (vs NA, State, etc...)?  It looks like edX doesn't award until you've been accepted in a full program-so dead end.  The next idea is Graduate Certificates -thoughts? I'm thinking the UCLA Extension Post-MBA. General topics I like and could possibly teach: Technology/Psychology/Philosophy/Religion-Spirituality/Business.
I know there's little or no money from the job (esp in the beginning).  This would be more a labor of love or retirement thing.  Probably won't entertain K-12.
Thank you