The Guardians has an interesting article about lab-grown penises. Not only have scientists succeeded in creating a penis, they are about to test those. The primary aim of this research is to help patients with injuries or are suffering from congenital abnormalities. But I believe that once this technique has been fully developed it will be used in sex-change operations (female-to-male) or on women who just want to have a penis.
A penis from the lab