How about booking him a paragliding adventure? You could either choose a location he's never been to before or a place he's always wanted to paraglide at. Another option could be to buy him a paragliding lesson with a professional instructor. This way, he could improve his skills and learn new techniques while doing something he loves. Alternatively, you could also gift him some new gear or equipment for paragliding such as a new helmet or a paragliding backpack to carry all his gear.
Or you can get him a star map with the date when he welcomed you in this world.
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.