The main body of this lanyard is done in the snake knot. I started a little over 6 feet of paracord and made a 2 inch loop at the center of the length of cord, made a lanyard knot(also called a boatswain's whistle knot), then did a series of snake knots, fed the two cords thru a swivel clip and made another lanyard knot around the clip, trimmed and melted the ends. The finished length of this one is about 9 inches and I used about 6 feet of paracord in it.
This was a first attempt at this knot, which I believe is a variation of a two-strand wall knot(Ashley Book of Knots #775), so I wasn't sure how I'd use it. I think I'd make it a bit longer next time so that it would be long enough to also be used as a wrist lanyard as well as one to attach to keys, knives, flashlights, etc... and clip to a belt loop and hang down in a pocket.
Thanks to Scott for bringing the snake knot back to my attention. I'm sure I'd seen someone else use it before, but I don't remember where. I'm a member of quite a few forums and it's hard to keep track of them sometimes, but it helps in learning from the ideas shared on things to make with paracord in addition to the books I have.