Balloon Relays

Requirements:

Split the troop into teams/patrols with half the team at one end of the hall and the other half at the opposite end facing each other. Each team has one balloon and on the whistle one person from each team heads the balloon to their next team member at the other side of the hall. The balloon is not allowed to touch the floor (or else they have to start again) and they can only use their head.
You can have variations on this such as:
- Walking with the balloon between you knees/legs.
- Kicking the balloon.
- Carrying the balloon with a spoon.
- Any of the above with obstacles in the way.