Another great source for coupons is on Ebay. You can literally find a coupon for almost anything. Take a look for yourself by doing a search for a specific product you enjoy. I searched for Hot Pocket Side Shots and ended up making my first purchase the other day.
If your grocery store doubles coupons then look for alternate denominations to coupons found in your local paper. For example if you got a $1/2 coupon for coffee last Sunday, chances are another part of the country may have gotten a $.75/1 for that same product.
People sell in lots of 5 or 10 or 20 usually. If there’s a product you use constantly in your home why not stock up?