What says summer more than Kool-Aid? Randal Kottwitz from Hastings, NE, submitted this "kool" design. Every year, Kool-Aid Days welcomes about 30,000 guests to Hastings to celebrate the invention of Nebraska's Official Soft Drink. Edwin Perkins invented the drink in 1927. It takes more than 250 volunteers to host this huge event. "This is the fourth year that we've been using button to thank our volunteers," said Randal. "Many keep them as collector's items and display them on their bulletin boards throughout the year, helping to promote Kool-Aid Days for the next year."