How about a personalized diving log book or a dry bag to keep his diving equipment dry and safe? You could also consider posters or books about marine life, a waterproof camera or a diving course voucher. Another idea could be a diving watch or a personalized diving knife with his name engraved on it. Whatever you choose, make sure it is high-quality and safe for him to use during his diving adventures.
Or you can get him a star map with an important date you share.
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.