So the small rink has photo paper boards which is ok for now, but I came across this wonderful stuff called Kydex which I used for the boards on the big rink. Its really perfect for this, just heat it up and its easily moldable. Using Banjoflyer's idea (thank you) I made the boards pretty quickly. Now I just need to trim them up and attach them to the "ice". But first I need to paint the lines and glue down the circles I cut out for the face off zones. Last will be the glass. Progress!