Australia Day Aussie Horn Necklace Accessory Make some noise this Australia Day with this Aussie Flag horn costume accessory! Featuring a beaded necklace, this Aussie horn will make a great addition to your Australia Day outfit! Description: Novelty Australia Day necklace is made from white beads. Attached at the base of the necklace is a metallic blue horn that is printed with the Australian Flag. At the base of the horn are silver tinsel streamers. A red mouthpiece is attached to the top of the horn. The horn measures 28cm in length.