How about a custom jigsaw puzzle? You could choose a favorite photo of the two of you together and have it turned into a jigsaw puzzle that she can work on anytime she wants. It would be a unique and personalized way to celebrate your anniversary, and it plays on something she actually enjoys. Companies like Shutterfly and Etsy have different options for custom jigsaw puzzles.
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.