[Flash]

Inside Package: Coupons are occasionally available printed inside cardboard product packaging, such as cereal boxes, frozen dinners, yogurt packs, to name a few. Coupons also often tucked behind labels on cans!

While the exterior of the package may indicate that coupons are inside the box, they frequently don't! And, they are not always obvious, as in this greeting card coupon found on a Scotch tape package: