As fans, we're powerless beyond our capacity to spend money. So when we want to protest, rejoice or engage in behavior that can only be described as unorganized, few acts are as viscerally satisfying as sitting in the stands and throwing something...anything...into the field of play.
Often, throwing stuff on the field is an act of civil disobedience bordering on outright lawbreaking. Sometimes it's a tradition that adheres to an unwritten rule that tolerates—or even embraces—a synergy between fans and team, manifest in items littering the sports venue. Think—hat trick.
Either way, throwing things is all we have, outside of corporate kowtowing to the networks with effusive poster-board anagrams of network call-letters.
These are 20 items that fans throw on fields.