And what did my wandering eyes behold? Something new to me!
A bit of investigation confirmed my suspicion. This type of art is only new to me - - it has a huge number of practitioners. Knotting around a bottle or container is quite old.
One obvious current use is a water bottle sling. Here I'm not talking about a crochet or knitted carrier into which the bottle is inserted. This is all about working the string/yarn around the bottle, knot by knot.
This is a good overview of a simple technique that is called a netted bottle. Same concept as the hitched bottle.
Self-Made Sailor has some interesting things (and a recipe) over here. I love the bottom of the bottles. Do click on over and have a look see.
Further investigation turned up the International Guild of Knot Tyers (IGKT) which just proves that knots are quite a serious matter.
So what is my point? Simply this. A length of fiber is a valuable thing that has practical use AND makes for some mighty fine art. Yeah for string!