During the Vietnam War, jet fuel tanks were dropped across farmland in South Vietnam. Years later, those tanks are still being put to use… as canoes.
Military tactical jet planes during the war used JP-8 fuel that’s loaded into external fuel tanks. Once the fuel is burnt, though, the tanks are removed in order to reduce the overall weight of the plane. These tanks were dumped onto the Vietnam countryside by USAF jets.
Rather than letting these tanks create waste, they were eventually recovered and repurposed. Vietnamese citizens transformed them into canoes, which are viable for water travel.
The farmers found a way to turn the remnants of war into an element of productivity.