11.   They can be made from anything from hand-forged iron to corrugated cardboard.

12.   You can make such a reflective shield by gluing heavy duty aluminum foil to the front of a sheet of foam insulation board or heavy corrugated cardboard.

13.   You can, for example, grain the surface by dragging a piece of corrugated cardboard through the wet stucco.

14.   The government dominated by the PRI, or Institutional Revolutionary Party, offered credits to help them construct their shacks of corrugated cardboard.

15.   The speakers comprise a three-sided pyramid assembled out of a single, creased sheet of tough corrugated cardboard which folds flat after use.