I had a real wind fall, I'm not kidding, here in Oklahome the wind blows A LOT... One day my DH came in with a big piece of the insulation board with the foil look. It had just blew into the yard from somewhere. None of the neighbors knew where it came from. It had a corner broke off so DH evened it off and I had a large piece of felt so I just pined the felt on it and walla! a design board. It,s so light I can move it around easily. cost me nothing.