You can get a Starbucks Grande Refresher for $2 when you visit your local Starbucks after 12pm with a receipt from your morning visit.  Your morning receipt will have this offer printed on the bottom.  You can enjoy tangy flavors like Cool Lime or Very Berry Hibiscus, that mix real fruit juice with Green Coffee Extract for a light caffeine kick.

The fine print: See receipt for offer expiration date. Offer valid at participating U.S. Starbucks stores. Not valid at Austin or Oxnard Starbucks stores. Limit one per customer. Void where prohibited, taxed or restricted. Cash value .01¢. Cannot be combined with other offers or discounts. Not valid if copied, transferred or assigned.

(Thanks, Keeping Cents!)