After looking at my Pinterest (which I don't use nearly enough), I decided to finish off the girl's crochet hat with a large flower. I chose this flamboyant but easy to make corsage from the Eweewe blog which I pinned a couple of years ago when I was looking to embellish a plain black bolero.
I used the pinky/fawn 4 ply from the hat and paired it with an oddment of acrylic variegated yarn that I found in my leftover yarn bag. I made 16 petals rather than the 20 the pattern called for, and still ended up with a very large flower! It's finished off with a sparkly button from the Scrapstore.
I would certainly use the flower pattern again, it was quick and easy to do and really stands out.