Hanger-on n. : One who hangs on, or sticks to, a person, place, or service; a dependent; one who adheres to others' society longer than he is wanted.

Example:
How to make a wire hanger on autodesk inventor?

Taxonomy
coat hanger, car seat, Shop, Seat Car, the Home.

Defination from the web:
Hanger on Car Seat in the Home Store section of Shop.com. Thousands of Brands. Hundreds of Stores.