Put people into groups of two.
You'll need two stockings (or knee highs), eggs, and 2 foam swimming noodles.
Within each team of two, nominate one person to be the horse and the other rider.
The horse will need to put the stocking with the egg on their head so the egg is in the middle of their forehead. The rider will then ride piggy back on the horse's back, using the the noodle as a jousting stick.
2 teams of two will compete and the first team to break the other teams egg with their jousting stick moves on in the tournament. Continue eliminating teams until there's a winner.
Obviously safety may be an issue here, so take necessary precautions to ensure the game will not injure anyone and if in doubt, perhaps choose another game!