[Another pinner said: "I love you", written in Circular Gallifreyan. Maybe a large embroidery piece as a wall hanging- normal people can see abstract art, we'll see something really special.] I love the idea of embroidering Gallifreyan!
Moral of the story: never tell River Song something is cool. And never wear anything on your head. At least she hasn't shot the Bow tie yet. And the Doctor would be dead. <-- she likes the bow tie is why.