One idea could be creating a Sex and the City-themed date night. You could get tickets to a play or musical that features some of the cast or take her on a tour of New York City to visit some of the show's iconic filming locations.
Another idea could be a set of Sex and the City-inspired gifts such as a necklace or bracelet with a Carrie nameplate or a set of martini glasses like the ones the girls drank from in the show.
If she enjoys reading, you could get her a book about the making of the show or a biography of Sarah Jessica Parker, who played Carrie Bradshaw.
Lastly, a DVD or Blu-ray collection of the entire Sex and the City series could be the perfect gift for your girlfriend to watch and re-watch.
Or you can get her a star map with the date of your anniversary.
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By using advanced astronomical algorithms and data from leading institutions, the company produces highly accurate, visually stunning maps that make for perfect gifts or cherished keepsakes.