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  I used plywood to block of the dining room.  I had home depot cut a 4 foot by 8 foot sheet in half making them 2 by 8.  You could have them cut them again so you would have 4 pieces that are 2 feet by 4 feet.  Then all you need is corner beackets and screws not longer then the width of the plywood.  They would have a 4 foot by 4 foot pen to play in.  If you want it bigger, just get different cuts on the plywood.  |