Caribou Coffee BOGO This Weekend This post may contain affiliate links. Please see my full disclosure policy for details. October 13, 2012 13 Oct Pin0Share0TweetGoogle+0shares This weekend, grab a friend and head to Caribou Coffee! Why? They have a new coupon for Buy 1 Get 1 free drink! You either need to print the coupon or just show it to the cashier on your phone to get in on this offer.