Five Star Gift Ideas

How about a subscription to a streaming service that offers a range of documentary films, like Netflix or Amazon Prime? You could also get her some of the top-rated documentaries on DVD such as:
- RBG - a documentary on Supreme Court Justice Ruth Bader Ginsberg
- Going Clear: Scientology and the Prison of Belief
- Blackfish - a documentary about captivity of killer whales in SeaWorld
- The Act of Killing - a powerful documentary that explores the genocidal purge in Indonesia.
You could also consider getting her a book about the making of a documentary film, or a biography of a famous filmmaker who specializes in documentaries.

Or you can get her a star map with the date when she was born.

Rhea Patterson says about Under Lucky Stars star maps:

“My fiancé loves to look at the stars so this was the perfect gift for his birthday. FUN FACT: Our first date was also the day he asked me to date him!”