Tiarasaurus Knits (and gardens)

I've got a scarf that was one of my first knitting projects. It's a simple garter stitch scarf in an Artfibers ribbon yarn called Harlequin. I originally bought 3 spools of it (99 yards/ 50 grams/$11.50) and only used two, since that made the scarf almost long enough. I was originally going to return the unused spool. But after wearing the scarf a few times, I've decided that it's just a bit short. So I think what I will do is pick up stitches on either end of the scarf and add a border of several rows of elongated stitches and yarn overs. Wish me luck. . .