As the Fellowship was about to leave Lorien they were given rope made of hithlain by the elves. The rope was very slender and silken to the touch, yet very strong. Sam and Frodo used the rope to go down a cliff. Just as they were about to give up on the rope, Sam pulled it and on command the knot let go and the rope returned to its owner.
"Shall we continue to our next item: The Arkenstone?"