As a child, the sight of a big square box with a handle often signaled a sweet treat was on the way — whether it was donut holes or the iconic Dunkin' donut box filled with sugary goodness.

Krispy Kreme, Dunkin’, and more national ... Krispy Kreme has not only one but two Donut Day offers. Customers can order one donut for free and can pay just $1 for a dozen original glazed ...