How about a personalized vinyl record with their wedding song on it? You could find a company that specializes in creating custom vinyl records and have their first dance song or a favorite song of theirs pressed onto it. Another idea could be a record player or a set of vintage vinyl records that they can add to their collection. You could also consider a nice vinyl record storage stand or display case to showcase their collection.
Or you can get her/him a star map with the date of the wedding.
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.