If the local work-out centers have bulletin boards, you might stick up some "fringe ads"... you know, announcements with a series of tear-offs with your phone # and what you do on each one. Also grocery stores, schools, work environments, beauty shops, etc...any place that will let you put one.
I enjoy that sort of teaching and demonstrating. Years ago, I had a lovely job working for Oster [until Sunbeam bought them out
], demonstrating their kitchen appliances in high end stores. Not only was it a fun job for me, but I also learned a lot too. Well, anyway, I think it's a fantastic idea, especially if you have good people skills. [I have known some chefs who do not play well with others...
]