This is an exercise which demonstrates the difficulty of delegating.
Just before lunch or the evening meal, divide the group into pairs and ask that everyone delegate the task of getting or ordering their meal for their partner. No further communication is allowed between the pair once the task has been set.
Debrief by asking if anyone got a meal that was close to what they wanted. Ask how the situation might have been improved.
This exercise works best with a self-service cafeteria and before the group gets used to the cafeterias layout and menu. This makes the task more complex and involves the 'delgatee' in showing initiative.
Prevent the use of note taking to make the task even harder.