How do I search for stocks with added value?

I saw a list a few years back that showed stocks with added value -- things like Wrigley's sending their stockholders gum every year. I tried searching on my own, but am not sure what they would be called and get a million hits returned. Can you help?here's an article that lists a half-dozen companies offering perks to shareholders.

http://beginnersinvest.about.com/cs/inve...