You could consider buying him a gift card for an escape room experience. If he has already been to most of the ones in your area, you could look for escape rooms that have unique themes or challenges. Another idea could be to create a DIY escape room at home for him and your friends. You could purchase or create your own puzzles and clues and set them up in different rooms of your house for him to solve. Additionally, there are escape room board games and puzzles that you could consider buying him as well.
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.