How about getting him a complete collection of the Star Trek: The Next Generation series on DVD/Blu-ray? Or you could get him a new Star Trek: The Next Generation board game or a book about the making of the show. Another idea could be a replica of a Star Trek uniform from the show, or a model of the starship Enterprise that he can build and display. If he's a fan of coffee or tea, you could also consider a Star Trek: The Next Generation mug with his favorite character's image on it.
Or you can get him a star map with the date when he was born.
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.