I think you should give him nice silver ring with your name engraved on it, small digital camera, jockey underwear set, if you have a high budget then give him 42" LCD TV, if you are from rich family then a car or out of country homeymoon trip,
above said things are just commercial or copycat way of satisfying the partner but in my own honest opinion if girl can gift to her husband her virgianity, honesty, trust, and promise to be with him for the rest of her life and helping and supporting each other for their professional life (if needed).