The loser must announce every single pick of next year's draft in a league-assigned persona, a movie trailer voice, a British golf whisperer, a furious talk-radio host, without breaking character for the entire draft. Three hours of bit commitment. Breaking character adds a round.
Budget note: this one costs nothing but dignity, which makes it a strong pick for leagues that would rather spend the pot on the champion than on the loser's downfall.
Seen in the wild: fantasyleaguelottery.com