This Activity is meant for Boy Scouts, Webelos scouts.
Decide for yourself if it is appropriate for your younger scouts or not.

25 foot rope
a tree

If you have enough trees, you can have all patrols do it at once as a competition. Otherwise, do it as a teamwork exercise.

Patrol ties a clove hitch around a tree without coming within 5 feet of the tree.

(If you just can't figure this out, send me an email)