Krispy Kreme, in a statement to NBC News for its report, “Krispy Kreme Offers Free Glazed Donut to Those Who Show Covid Vaccine Card.” Krispy Kreme’s offer of a free doughnut to those who present their vaccine card at any Krispy Kreme store in the U.S. is good “every single day for free donuts through the end of 2021,” according to NBC.