The 1990s were a time when wonky human tricks flourished, and youths with poi sticks, Frisbees, skateboards, slacklines and Hacky Sacks filled parks and sidewalks. They were amateurs; the next generation took it to the big leagues. Saturday and Sunday, join some of the top Hacky Sack jugglers in North America for the U.S. Open Freestyle Footbag Championships, going down at Boise State University's Centennial Amphitheater. Hosted by the aptly named Boise Footclan, the two-day event will feature free Hacky Sack clinics and circle competitions. Check it out as a non-competitor for $15, register as an intermediate for $25, or go full bore in the open and women's divisions for $40.