Dairy Queen is king, when it comes to satisfying a sweet tooth with ice cream cones, sundaes, shakes and more. It’s hard to believe they’ve been the coolest place around for 77 years now. Once again, Dairy Queen celebrates its anniversary this spring with Free Cone Day on Monday, March 20. On the sweet day, Dairy Queen is serving a FREE small vanilla soft-serve cone at participating locations. The promo also serves as a kick-off to Children’s Hosptals Week. Customers can leave a donation for Children’s Miracle Network Hospitals, in exchange for the cool treat. Limit one per customer. (FYI – Mall locations are not participating.) For locations, click here.