During Marquesas, the winning tribe of a Reward Challenge would get one minute to grab whatever they could from the opponent tribe's camp, and as long as they could carry it, they can return to their own camp with it. Many items, such as blankets, lanterns, and tools, switched hands very often.
Whilst this only occurred at one point during Marquesas, Tocantins and Cagayan. Pearl Islands had a contestant from the winning tribe visit their opponents to take one item from them and bring it back to their own camp. In Pearl Islands looting happened after most tribal Reward Challenges.