Head to Caribou Coffee's Facebook page to download and print a National Coffee Day coupon. Then bring it with you or show it on your mobile device to score a free coffee .
Download Dunkin' Donuts' app to your smartphone. Then on National Coffee Day, tap on the "My Offers" section in the app to find your freebie coupon for a free small hot ir iced coffee.
When you're done there, drive down the street to Krispy Kreme for a FREE 12 oz. cup of java.
Help Starbucks celebrate the launch of Ethiopia, a new coffee blend, that you'll be able to taste for free on National Coffee Day. If you buy a 1 pound bag, get a complimentary ceramic mug while supplies last.
Thanks to Tip Hero for this awesome heads up!