Aryballos in the form of a Siren. Wikipedia: An aryballos (Greek: ἀρύβαλλος; plural aryballoi) was a small spherical or globular flask with a narrow neck used in Ancient Greece. It was used to contain perfume or oil, and is often depicted in vase paintings being used by athletes during bathing. In these depictions, the vessel is at times attached by a strap to the athlete's wrist, or hung by a strap from a peg on the wall.