"...Make a fire with something oily and stubborn - soak some rags in used motor oil and hang some old curtains over it to simulate a kitchen grease fire...."
You know, this might be a good way of working with your neighbors to foster a better, more prepared community. Spread the word that you give some fire extinguisher training at a certain time/date for whoever shows up. I think that might attrack some people. Another possibility is to get the homeowners association involved.
I wonder what liability issues this might entail, though.
-Blast