Einstein Bros.: FREE Bagel Poppers with Beverage PurchaseDecember 20, 2009 by Mitchell Wischmann This post may contain a link to an affiliate. See my disclosure policy for more information. Get a FREE container of Bagel Poppers at Einstein Bros. when you buy a beverage. All you need to do is bring this printable coupon. Coupon expires on 12/29Thanks, Common Sense With Money!