How about a custom engraved lock pick set? You could get the lock picks professionally engraved with their names, wedding date, or a special message. This would be a thoughtful and personal gift that also incorporates their interest in locksport. Another idea could be to find a rare or unique lock for them to practice on, as they could add it to their collection and use it as a conversation starter. Finally, you could also consider getting them a book on the history and techniques of locksport or a subscription to a locksport magazine to help them perfect their craft.
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.