So, I have another sister-in-law, Maddie (I know, I got a lot of family when I married this guy :P), who also graduated from high school this year. I decided to knit her present, and I had the perfect yarn:
It's a yarn called Rhapsody Glitter Light in color 234, from a company called Artyarns. This particular blend is 85% silk and 15% mohair, with some Lurex thrown in, and it's a dream to work with. It's crazy soft, but the mohair makes it so that the yarn doesn't slip, which can be a problem with fully silk yarns.
I had it on good authority that Maddie's favorite color is blue, so I knew this yarn would be exactly right. The same authority (her Mom) sent me a bunch of patterns that she'd liked on Ravelry, and most of them were an infinity scarf or cowl type of pattern. None of them quite worked with this yarn, though, and I was stubborn about it, so I decided I'd just make my own. This is what I came up with:
It's a fairly simple pattern (available at the link below!), just a lace and cable repeat, but I love how it shows off the absolutely gorgeous yarn.
There's always a little moment of uncertainty when you give someone something you've made, especially when the pattern is yours too, but Maddie loved it! The color is perfect, and she's going to college in colorado in the fall, so the warm mohair will be perfect for the winters there. I'm pretty happy that both graduation gifts were a hit!
Edit: the pattern is now available in my ravelry store: http://www.ravelry.com/patterns/library/maddies-infinity-scarf. Thanks to all who expressed interest!