You can get free coffee or other deals at Earl of Sandwich, Starbucks, Dunkin' Donuts, and Peet's Coffee & Tea. Details below.
Earl of Sandwich Get a free hot cup of coffee at the Boston Common location. Choose from signature Kona, dark roast, and decaffeinated blends. Sept. 29, 8 a.m.-8 p.m. 1B Charles St., Boston Common. 617-426-1395, www.earlofsandwichusa.com
Dunkin' Donuts Enjoy a free hot or iced coffee on Sept. 29, but only if you download the Dunkin' app. Details here. The chain is also offering special discounts in honor of the day. www.dunkindonuts.com
Starbucks A new coffee blend, Ethiopia, launches on Sunday. Enjoy free samples on Sept. 29 at participating locations, including the one at 62 Boylston St., Boston. www.starbucks.com
Peet's Coffee & Tea With the purchase of a baked good or oatmeal and a coupon, get a free small maple latte on Sept. 29. Locations include Boston, Cambridge, Brookline and Somerville. www.peets.com
