Proctor and Gamble... makers of Pringles, Charmin, Pampers, Tide, Durecell, Iams Pet Food, and on and on... have lots of promotions and freebies.
I just found a page on their website where they list their latest freebies and promotions. There are free samples, tips and contests. They are currently running a contest to write a new Jingle for Pringles. Winner gets a trip to the 2007 "American Idol™" Finale in Hollywood! Oh boy... you could visit me and sing me your winning jingle. I happen to know that a few of my readers are great song writers and COULD win this. (You know who you are.... so click here and start writing!)
I suggest that you don't try to find this page from their homepage... it's not the easiest to find. Just click here for the latest Proctor and Gamble Freebies and Promotions.