Game: Elephant - The object is to knock over the cups as quickly as possible using only the ball slid into the foot of the tights/hose that are worn over the head. Could be a race, or simply a entertainment value game.
10 Team Building Activities for Adults and Kids, Give them each a knife and a marshmallow and have them build a structure where all knifes are touching at least one other knife and only one marshmallow.
This would be a great game to play with kids to practice leadership skills. You could have the students take turns being the one in charge and giving the group directions. Leadership is another vital social century skill.