Krispy Kreme is serving up free donuts to help with a nationwide blood shortage. This week, the donut chain will give away a dozen original glazed donuts to people who donate blood to the American Red Cross. All you have to do is show up to any Krispy Kreme and show a donation sticker or confirmation of donation through the Red Cross blood donor app. The Red Cross recently announced that it's dealing with the worst blood shortage in over a decade. The free donuts deal is also available for donating blood to other organizations besides the Red Cross.