Abstract: A fastening device that secures containers or ornaments to bracelets or other items of jewelry, and other items used by children such as belts, hair clips, lunch boxes, pouches, mirrors, jewelry boxes and the like is disclosed. The fastening device comprises a holding member having a shank, one end of the shank being fixed to the first object and the other end of the shank having a Z-shaped flange extending therefrom and an attaching member having a Z-shaped opening complementary to the Z-shaped flange such that the Z-shaped opening fits over the Z-shaped flange. When the attaching member is rotated on the Z-shaped flange, the attaching member is secured to the holding member thereby securing a second object to the first object.