A pink license plate frame reading 'I suck at fantasy football' rides on the loser's car, front and back in strict leagues, until the next season's loser is crowned. Leagues often make the outgoing loser pay shipping to the new one, creating a traveling relic. Cheap, visible, and permanent-feeling without being permanent.
The long haul: this is not a one-afternoon sentence. With a time commitment of full year, the punishment keeps paying out (for everyone else) long after the season ends. Long sentences need a written end date and a league-appointed enforcer who checks compliance.