How about a kiteboarding lesson or session? This would be a fantastic gift for your son and would give him the opportunity to improve his skills and have fun doing what he loves! Another option could be kiteboarding equipment such as new kite, board or other accessories he may need or want. You could also consider a book or DVD on advanced kiteboarding techniques or a subscription to a kiteboarding magazine.
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.