I've seen a few of these in the new Pottery Barn catalog. They didn't have them listed for sale, although I know I could make them myself anyway. Or at least I was up to the challenge. The first two tries were a challenge. Then, just like with most new things, I got the hang of it and it's really quite simple. I found a long piece of rope at a yard sale for one dollar. I was able to make two of these with a good length of rope left over. So, the knot below only cost me 50 cents!
Here is the online tutorial I used to learn how to make this:
