How about a homebrewing kit that he can use to create his own unique and delicious beer? You could also consider getting him a set of specialized beer glasses or a beer tasting set that he can use to fully appreciate and savor his creations. If he's already an experienced homebrewer, you could get him a book on advanced brewing techniques or even enroll him in a beer-making class to further develop his skills. Another idea could be to plan a brewery tour or beer-tasting event for the two of you to enjoy together.
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.