Buy 1 Get 1 Free Beverage at Caribou Coffee Oct. 31st Present the coupon or show on your mobile device to redeem. Buy 1 Get 1 Free Beverage at Caribou Coffee Oct. 31st No related posts. Sign up for our daily newsletter and never miss a deal again! As a subscriber, you'll be the first to know about new offers and discounts on SweetFreeStuff.com! Enter your e-mail: