Looking at Cooking with Mildred Swift
A clever idea for showers and wedding receptions is a decorate your punch bowl with a frozen ring of orange blossoms. Your florist will probably have the orange blossoms or you can use imitation ones which are sold in the dime stores.
Fill a 5 cup ring mold with water. Float the orange blossoms and freeze quickly. As this freezes, you’ll need to watch closely and keep the orange blossoms placed in line around the mold.