I was thinking about EMF, and the people who think it is affecting them. If I went over to the Dark Side, I could create a protective device for these sufferers. A helmet with an antenna over the bregma, made of finest aluminum. An added bonus for the purchaser could be a phrenological reading before custom fitting the contraption.
I think that these are some good models for the prototype:
Now that I see it, Boing Boing bears watching for promotion into the blogroll.