How about a Celtic knot necklace? You could get a pendant or charm that is made in a Celtic knot style. Another option is a Celtic knot ring or bracelet. If she enjoys artwork, you could consider a piece of Celtic-inspired artwork for her home, such as a painting or tapestry. You could even plan a romantic getaway to a location with Celtic history, such as Ireland, Scotland or Wales.
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.