http://www.cascadeyarns.com/patternsFree/DK217_220SportPrinceEdwardScarf.pdf
For this scarf I used Malabrigo Arroyo, which is a sport weight yarn. It's very soft and light, 100% Superwash Merino, and comes in a 335 yard skein. After working with it on this scarf I think this one would be great for making a sweater or warm shawl.
I made the scarf using Arroyo Jupiter (049) with an H hook. The finished scarf measures 69"x4", and there was around 42g of yarn left over once it was done (out of a 100g skein). I modified the pattern slightly - when I started the 4th round I didn't care for the way the picot edge looked, to me it was a little too pointed. Instead, I just single-crocheted around the edge for the round, leaving it with more of an overall scalloped edge in the finished product. You could improvise this any way you wanted to; here's how I did it:
In round 3, in the center ch, you "work [(dc, ch 3) 3 times, dc] sk next 3 chs, sc in next sc" - this gives you a sort of scallop with spokes in it. For my modified round 4, I started by putting a sc in the sc created in the previous round. Then, 2 sc in the ch-3 space, sc in the dc, 2 sc in the next ch-3 space, sc in the dc, 2 sc in the next ch-3 space, and then we're back to putting a sc in the previous row's sc.
Here are a couple of pictures to illustrate:
Starting with the sc in the sc from the previous round, the arrow shows you where I am about to make my first sc.
Then the 2 sc in the ch-3 space, a sc in the dc, 2 sc in the ch-3 space - here I am about to put a sc in the next dc.
And so on... Here are some pictures of the finished scarf - I just love the rich color of this one!