
The promotion, which uses a text to win mechanic, will see all proceeds from the entries go to the charity. Additionally Snack a Jacks will also donate £250 for each celebrity item given away. The campaign launches on September 1 and runs for three months.
Celebrities who have donated belongings include Alesha Dixon, Peaches Geldof and Geri Halliwell. The campaign was created by Initials Marketing.
Snack a Jacks, marketing manager Jenny Watson said: "We are proud to be running an on pack promotion that will raise money for the Pink Ribbon Foundation.
"It will have great appeal to Snack A Jacks consumers - not only do they get their favourite tasting snack but they are helping to raise money for a really good cause and have a chance to win a fantastic prize."
This is this year. In January it linked up with Touchstone Pictures to launch on an-pack competition offering consumers the chance to win one of 1000 cash prizes. The activity was tied into the film 'Confessions of a Shopaholic'.