Make an ice ring in advance. You can do this several days ahead. Pour either cranberry or orange juice into a ring mold. Freeze until solid. You can put some decorative fruits in with the juice. Raspberrie and orange slices are very effective.
About 1/2 an hour before serving, pour cranberry juice, ginger ale, orange juice and frozen raspberries into a large punch bowl.
Right before serving, add the ice ring and thinly sliced oranges.