You can use: A wine bottle (empty or unopened).

Sure, you can fork over the $40 for something you use only at Thanksgiving, but why would you when a wine bottle works just as well? Sandwich your pastry between sheets of plastic wrap or wax paper to prevent sticking. Press down firmly on the bottle with one hand; grip the neck and steer with your other. (If you chill the dough to firm it up, do so briefly: Slightly firm dough is easiest to control.)