I picked up some multi-colored, mostly cotton yarn to make a matching set of hats for a co-worker expecting twins.
Pattern: One Skein Candy Baby Hat by Artful Yarns (on ball band of yarn)
Yarn: Artful Yarns Candy in the Lollipop colorway (9366)
Needles: US 6 / 4.0 mm
Interestingly, the pattern is to knit it flat and then seam up the hat when done. I have to admit I didn't realize this - I mean, who would knit a stockinette hat flat? - and I thought it was just the little cord at the top that was knit flat. In any case, I knit it in the round, and finished with an i-cord rather than the nine-stitches-wide top flap per the pattern.
My co-worker was very happy with them, and now has three-month-old twins, a girl and a boy, so I'd say it was a success all around.