Happy birthday alphabet letter foil balloon with number foil balloon. Best balloons for birthday decoration. Best birthday decoration item for boys and girls. Blooms Mall Present (Number 18) Golden Balloon lets everyone know which big milestone event you're celebrating! You can combine this gold number balloon with other numbers for a custom look at a graduation, birthday, New Year's Eve party, or anniversary. The metallic finish of this gold number balloon makes it an eye-catching addition to the photo booth background at your event.