Today is Ben & Jerry's 30th annual free scoop day, when participating locations give out free ice cream cones all day. In Chicago, that means Navy Pier (700 E. Grand, 312-595-5496). There are also some suburban locations participating; click here for a complete list.
Can't make it today? Try Baskin Robbins' 31-cent scoop night tomorrow from 5-10 PM at all locations. Or if you can wait until May 17, go to Bobtail's free scoop day from noon-3 PM (2951 N. Broadway in Chicago, 1114 Central in Wilmette).