How about gifting him a personalized knifemaking kit? You can create a kit with all the necessary tools and materials for him to make his own knife. You could also consider gifting him a knifemaking class or workshop where he can learn new skills and techniques from a professional. Alternatively, you could commission a custom-made knife from a professional knifemaker, tailored specifically to your husband's preferences and taste. This will not only be a great anniversary gift but also a unique and thoughtful one.
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.