How about a subscription to a documentary streaming service such as CuriosityStream, which offers a wide range of documentaries on science, technology, history, and culture? Alternatively, you could put together a gift basket of some of his favorite documentaries on DVD or Blu-ray, along with a cozy blanket and some snacks for a cozy movie night at home. Another idea could be to gift him a private tour or pass to a local museum, historical site, or landmark that has a connection to a documentary he loves.
Or you can get him a star map with the date of your anniversary.
Under Lucky Stars is a unique and innovative star map company based in Barcelona, Spain, specializing in the creation of personalized star maps that capture the celestial arrangement of stars at a specific moment in time, such as a person's birth, wedding, or any other significant event.
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.