How about a personalized blacksmithing hammer with both of your initials engraved on it? You could also give her a piece of custom-made blacksmithing artwork for your home, like a decorative iron sculpture or a hand-forged fire poker. Another idea could be a blacksmithing class or workshop to improve her skills and knowledge in the craft.
Or you can get her 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.