I recently received a good response from a product demo video I created. I started out with individual emails and cold phone calls to prospective contacts. About 1 in 3 wanted to see the video. Of those, 1 in 2 signed an NDA. One was willing to discus licensing and manufacturing. I was not successful in reaching their desired manufacturing cost so the idea has been scrapped. I have since posted the video on YouTube.
It is a little eye candy with out revealing any specifics.