September 2, 2013 No Comments Caribou Coffee: Buy 1 Drink Get 1 FREE (Today Only!) Today only (September 2), buy one drink at Caribou Coffee and get a second drink FREE! Simply print or show the offer to your barista on a mobile phone to redeem. Caribou Coffee: Buy 1 Drink Get 1 FREE (Today Only!) – EXPIRED Facebook Twitter Add Comment Notify me of follow-up comments by email. Notify me of new posts by email.