What is the coil toy called?

There are various types of coil toys, and here are some common ones: ### Slinky This is a very well-known coil toy. It is a helical spring-like toy that can perform interesting movements like walking down stairs or being stretched and recoiled in different ways. When placed on an inclined surface, it can "crawl" down in a wavy motion, which is quite fascinating to watch and play with. ### Rainbow Spring Toy It usually has colorful segments along the coil, making it look like a rainbow. Kids can stretch it, twirl it around, and use it for simple games or just to fiddle with in their hands to feel its elasticity and unique texture. ### Fidget Coil Some fidget toys also come in a coil design. These are often used for stress relief and keeping hands busy. People can twist, bend, and manipulate the coil with their fingers to relieve nervous energy or just pass the time when they feel restless.