#structural device

• Hanger — A part, device, or accessory (hook, clip, ring) used to suspend, catch, or fix an object so that it hangs down; as an adjective, it describes an organism or a plant/animal organ adapted for gripping or climbing, such as climbing birds (e.g., the woodpecker) or plant tendrils.
• Stretcher — An instrument, manual device, or technical component used to achieve the elongation, extension, or dimensional calibration of a material through plastic deformation; an object or factor that causes elongation or driving away of an element. In certain crafting contexts, it represents a special tool used by shoemakers or leatherworkers for the controlled stretching of shoe uppers.
• Arifton — A proper name denoting a historical mechanical musical instrument of the organette type (invented in the late 19th century), equipped with interchangeable perforated cardboard discs, capable of playing popular melodies by operating a manual crank. As a rare commercial or toponymic proper noun, the term identifies technical patents or registered industrial brands that marked the evolutionary structure of sound playback devices.