oh oh "Tied in knots" is always good for a laugh:
Instruct your guests to stand in a circle facing inward. To begin, everyone extends his or her right-hand into the ring and takes a hold of someone else's hand. Then, they do the same with their left-hands. The object of the game is to see if they can untangle the "knot" by ducking under people, stepping over them or turning around. No matter what happens, they can't let go of hands!
or
Egg and Spoon race
or
Cats Tails Game
Get long strips of cloth any extra you have a round make them at least one yard long and have the kids put them in the back of there pants, with it just hitting the ground. Then the kids run after each other trying to step on there tail. When they lose there tail they are out of the game the winner is the last one with a tail. A couple rounds of this game should tire them out real fast.
or
Clean Your Room Game
You'll need 2 socks for each player, some rice and a fence or some sort
of divider. Fill each sock with rice or beans, about half full. Tie a knot in them. You'll need a fence or some sort of divider, consider string a line from one tree to another if you have no other options. Place kids on each side of rope and place the same amount of socks on each side. Have the kids throw the socks back over the rope, in order to clean there room. Give them a minute or two and then end the game. The side with the most socks after a minute is the winning team.