How about a personalized book? There are many websites that can create a custom book for you, where you can personalize the story with your own details -such as names, places and things you and your husband love- to make it truly meaningful. Alternatively, if your husband has a favorite author, perhaps you could get a signed copy of one of their books or a first edition of a book that's meaningful to both of you. You could even add a special note or inscription to make it even more personal. A book subscription service, like Book of the Month Club or Audible, might also be a great gift for him, so he can receive new books every month without having to leave the house!
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.