My wonderful, beautiful, confident, brilliant niece is fifteen today!
I went with a bunting for her birthday card. I made it out of double-sided cardstock so that it would be pretty from both sides (one side patterned, the other solid). I cut the letters out of card stock, glued them on with matte gel medium, used 1/4 bias tape for the string and sewed it all together. The individiual pennants are only about 3-4 inches long, but strung together, the length of it is about 6 feet.
She loved it. But not nearly as much as I love her!