How about a sign language book or set of flashcards that he can use to continue learning and improving his sign language skills? Another idea is signing up for a sign language class or workshop for both of you to attend together. You could also consider personalized sign language jewelry or art pieces, such as a necklace or print that includes both of your names spelled out in sign language. Lastly, you could plan a surprise outing to a museum or event that celebrates the deaf community, and spend the day learning about the history and culture of sign language.
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.