A friend of mine tipped me off to these wonderfully long wrapped necklaces from Korean Arts.com.

You'll notice they don't have a clasp, no need to. They are designed to wrap multiple times around your neck or any other area of your body that you can get this thing around. This necklace pictured (left and below) is 81 inches long (206cm), so even I could get this thing around my waist a few times and wear it as a belt as well. The do-dads on the ends are a good idea, both practical as they probably keep this weighted down and pretty as they add a little something extra to the overall design.

Here are a few more I found available on this site, which by the way, sells a lot of other unusual artistic items such as silk bags, bottles, and boxes.