Get a balloon, and put a message about a prize in it. Blow it up. Then pin the balloon down so it won"t blow away. Then, pick a player, and blindfold them. Give them a stick (e¿g. a hockey stick) and ask them to find and pop the balloon with the stick. Time each player - they only get 1 minute to do it. If they find the balloon and pop it then they can have the prize.
Source: From the original site.