Every charity goes door-to-door. (Bottle/can drives - school fundraisers - etc)
Why not go door to door and ask for neighbors Sunday paper coupons?
Hnad out flyers - ask neighbors to hang a bag of coupons on their front door, mailbox, etc.
Collect the coupons for charity - shop for your favorite charity, food pantry, etc...
Feel good and use up all the available coupons while helping the less fortunate