This ring for champagne wall is made out of three large pieces of plywood, artificial grass, a brass bell, and hinges to support the openings. This cost $600 to put together and a lot of time in labor. Just trying to recoup my expenses. Used it for a wedding last month. Great for any events. Why not purchase it to rent it out for Weddings.š Ring the bell! Thenā¦Someone passes a glass of champagne through the wall.