Cardboard, the packaging of the century

MUNICH, GERMANY – MAY 08: Volunteers build seats made of cardboard for the participants of the 2nd Ecumenical Church Day (2. Oekumenischer Kirchentag) on May 8, 2010 in Munich, Germany. Thousands will travel to the southern German city to take part in the Church Day events been held from May 12 to May 16, 2010. (Photo by Miguel Villagran/Getty Images)