How about gifting your girlfriend a subscription to a fitness class platform like ClassPass? She can have access to various types of fitness classes including Zumba and barre, without being limited to just one studio.
Another idea could be to book a private fitness class together, such as a couples barre class. You can let the instructor know that it's for your anniversary, and they can customize the experience for you both.
If you'd like to get her a tangible gift, how about gifting her a new workout outfit or a gym bag that she can use for her classes? You can even add a personalized note to the gift, expressing how much you appreciate her dedication to fitness and how special she is to you.
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.