By: Kara Murphy

Happy National Coffee Day 2015! Check out which coffee shops are doing promotions on Sept. 29.

• Dunkin’ Donuts: Free medium hot or iced dark roast coffee
• Krispy Kreme: Free small coffee and original glazed donut
• Starbucks: The chain is not offering free coffee but is launching ‘Starbucks One Bag for Every Tree Commitment.’ When a customer buys a bag of coffee in store, Starbucks will donate $0.70, the average price of a tree, to Conservation International in the U.S. to foster thriving coffee communities.
• Staples: If you post a photo with your favorite mug on instagram or twitter with #officemugshot, you will be entered in a competition to win a coffee prize package.