Made By Daisy will cut your signature out of a sterling silver sheet and attach it to a necklace for you for 99 (~$149). It makes the perfect display of your vanity. They're kinda small though, and only average about 4cm across. I remember in high school I practiced and practiced signing my name until I had the perfect signature. Now? Now all I do is sign my bar tabs with a cartoon penis.
Keep going for a couple more examples.