Krispy Kreme: free small coffee and original glazed donut. Dunkin’ Donuts: free medium cup of Dunkin’ Donuts hot or iced dark roast coffee. Tim Hortons: any size coffee in regular or dark roast for $1, Whole Foods: 12-ounce cups of coffee for $0.25 through September. Panera Bread: free cups of coffee through September for rewards members.