Most NBA teams offer some sort of giveaway for fans who attend playoff games. Whether T-shirts, "We Don't Bluff" Growl Towels or foam horns, these freebies represent an effort to show appreciation for those who bought tickets to support the team's postseason push by providing them with a cool event-specific piece of memorabilia. They also help present a unified, color-coordinated backdrop for the on-court action and create a unique visual element that makes the home gym look especially cool for nationally televised postseason contests.
The Atlanta Hawks did a pretty great job of this last spring, when they gave fans who turned out for Game 6 of their opening-round series against the Indiana Pacers a T-shirt bearing their just-revived "Pac-Man"-style secondary logo.