And last but not least, I think we have all seen these mini telephone cords around, and they are clever little things. (pamscalfi.com)
Their coils reminded me immediately of an old telephone cord. (businessinsider.com)
They're pairs of short protein coils, a bit like two pieces of Slinky or coiled telephone cords, and they can be stretched similarly to a Slinky and then contract back in a similar way. (sciencedaily.com)