Campbell's Win Visa GC, and Instant Prizes
I found this on the Canadian campbell's site.. If you are spotted by a campbell's dietitian with a campbell's product with the health check symbol on it in your cart/basket you could win instant prizes or a visa gift card. I read that you didn't have to actually purchase the campbell's product. There are 500 grocery store participating, I couldn't find exactly which ones, but maybe there is a way to find out if your locate store is participating? There are also some quick and yummy looking recipes on this site.
http://campbellsoup.ca/en/home.asp#