How about a beautiful watch for your wife? You could go for a classic mechanical watch or if she likes smartwatches, you could choose a luxurious one with a fashionable leather strap. Research on brands that specialize in horology such as Rolex, Audemars Piguet, Cartier, Breitling, Omega, and Patek Philippe. You could also consider buying her a watchmaking course where she can learn more about horology and how watches are made. Alternatively, you could design a custom watch box or display case to show off her collection of watches.
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.