The oil-filled keychain is a unique and exquisite accessory, with an acrylic shell and colorful oil injected inside. It has various designs, including cute cartoons and delicate patterns, which can meet individual needs. The oil can make small objects float, and there are "stellar dust" and sequins or pearls, creating a mysterious and dreamy atmosphere. It is also a great decoration for keys and bags, and a suitable gift for various occasions.