How about getting your son a new beach volleyball?
Additionally, you could consider buying him some beach volleyball accessories such as a volleyball net and poles, or a beach volleyball backpack to hold his gear. You could also look into booking him a lesson or session with a local beach volleyball coach or club to help improve his skills.
If you want to go for a more personal and unique gift, you could search for vintage or retro beach volleyball items such as t-shirts, posters or magazines to add to his collection. Another option could be to create a custom-made beach volleyball poster with your son's name on it. This would be a great addition to his bedroom or game room.
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.