I really like the lariat style, because it's so easy and can be worn different ways. I prefer to loop mine and put the ends through the loop, though they also look nice when they're wound around the neck a couple of times and knotted. I once made one that's long enough to be a belt, too.
here's a lariat I did:
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and the lariat being worn:
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and another lariat, on display:
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they're easy to make, and easy to wear..I've never had one fall off or slip, although if you're in the habit of playing with your jewelry (like me), you can make them not hang quite right if you keep fiddling with them while they're on..like in the pic of me wearing one. I kept playing with it all night, and made the loop go wonky.
-Amber