If your group is feeling adventurous, add a "reverse sweepstake." Whoever’s team gets eliminated first wins a tiny bonus. It encourages people to root for the underdog’s failure, which is hilarious.
Or create a side bet on which team scores the most goals in the group stage. It’s like a mini-game within the main game. Just don’t get too complicated—nobody wants to fill out a tax form just to watch football.
