How about creating a custom terrarium for your husband as an anniversary gift? You can buy a nice glass container and fill it with succulents or other plants that he enjoys. You could also add little decorations or trinkets that are meaningful to the two of you. Another idea is to purchase a terrarium building kit that he can use to make his own creations. Other options include a gift certificate to a local plant shop or a subscription to a gardening magazine.
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.