7-Eleven marked the designation of Dec. 4 as "National Cookie Day" by incentivizing relevant Hershey Co. confectionery. The convenience store chain is offering shoppers a BOGO deal on Reese's "Crunchy Cookie Cups" or Hershey's Cookie Layer Crunch or "Cookies 'n' Creme" candy bars. Shoppers redeem the offer from Dec. 4-24 by scanning a mobile coupon sent from the retailer via text message.