How about purchasing tickets to a play or musical that she's been wanting to see? You could also look into getting tickets for a show that she's never heard of, but has received great reviews from other theater lovers.
If you want to go the extra mile, you could create a theater-themed gift basket with things like a playbill, theater snacks, and even a personalized note with your thoughts on the show. Another idea is to purchase a piece of jewelry, a scarf or a dress that she can wear to the theater on your anniversary.
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.