This Activity is meant for Boy Scouts.

a water bottle, hat, or similar sized object for each scout

Create a circle on a flat area that all scouts can easily stand in - about 7 feet across is good. Use rocks, sticks, or scratch a circle in the dirt.

good team-building and trust activity

This activity is better for a group of 4-12 - larger than that and there is too much standing around. All scouts need to bring a water bottle, hat, or some object about that size.

To start the activity, tell all the scouts to lay down outside the circle with their feet touching the circle and their head pointing away from the circle. This should make something of a star-shape of bodies.

Have everyone place the object they brought along on the ground at the top of their head. Then, all the scouts get up and assemble inside the circle.

The objective is to retrieve all the items left outside the circle without touching the ground and using nothing other than their bodies.

Every item should be retrievable by supporting a scout as he leans way out and grabs the item. It may take the whole team to leverage him back.

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You could come up with a scenario, such as they are on an island surrounded by lava. Or, they are surrounded by toxic sludge and need to retrieve all the parts to assemble their sludge-hardening ray gun.