BUBBLES
Divide children into small groups of three. Each group joins hands and becomes a Small bubble. They blow together and take off floating around the room. They can avoid contact with other Bubbles, float around with eyes closed, or touch and join into a Large bubble. In the end one Giant bubble collapses to the floor with one loud "POP!"

BALLOON CITY
Place a large number of balloons in a small area. The challenge is to keep them all in the air any way they can without holding them. No hands?

CAT AND MOUSE
You need two balls, one larger than the other; Nerf® balls are ideal. The children are seated in a circle. Tell a short story about how the Cat always chase the Mouse and the Mouse is little but quick. The balls are handed from one child to the next as quickly as possible. Start the smaller ball, the Mouse, first and the larger one, the Cat, a few seconds later. The adult can stand or sit in the middle to catch wayward balls.

FREEZE TAG
One person is "IT." IT tries to catch the others. When tagged, a child must freeze. Others may touch the frozen child to free him or her. Change who is IT every few minutes until each child has had a turn. Change the boundaries. Change the number of children who are IT.

http://www.ultimatecampresource.com/site/camp-activities/cooperative-games.page-2.html

Alphabet Letters
Players should be in groups of four. When the leader calls out a letter, the groups must form that letter using their bodies. 

Elephants, Cows and Giraffes
Get into a circle with one person in the center. This person will then call out elephant, cow, or giraffe. The person that is pointed out, as well as the person on each side of him/her will have to coordinate their actions and make each animal as described.

Elephant: center will stick both hands in front of their nose in a cylinder to form a trunk. On each side of them they will form the ears by leaning over placing one hand by the center persons hips and the other by their head.

Cow: center person will enter lock their fingers and turn them upside down so that the thumbs point down forming udders. The outside people will then milk the udders.

Giraffes: center places their hands directly over their head and together forming the neck, while the outside two arch their backs touching the middle person’s toes to form the legs.

If they do not get into this position by the count of 5 by the pointer then the last to get into position will become the center person. 

Sausage
Everyone sits in a circle. The person who is it stands in the center of the circle. Each person asks the person who is "it" an appropriate question. The only answer to every question can be sausage. The first person to make the center person laugh wins a try in the middle. 
Ex: What color is your hair? Sausage. What do you brush your teeth with? Sausage.
(Obviously other words can be used for variety)

Web of Names
Description
Sit the children in a circle and emphasize that they must remain in their seats or seated on ground (for safety reasons).

The game starts by a child or the teacher saying the name of someone else in the circle and holding on to the end of the string, while throwing the ball to the person they named. 

The receiver calls out the name of another child, and keeps hold of his or her end of the string while throwing the ball of string on to the named child.

As this continues a web begins to be formed by the criss crossing string.

The fun really starts when the group has to undo the web by calling names and throwing the ball of string which is rewound by the receiver before sending it on.

Requirements

Large ball of string