How about giving your grandson a personalized sailboard as his birthday gift? You can have his name or any preferred design printed on the sail. This would make it more special and memorable for him. Additionally, you can also consider buying him a new sailboard accessory such as a sailboard fin or sailboard mast, which he might find useful when he’s out on the water. Another option could be an experience day involving sailboarding, where he can learn some new skills from professionals and practice his current techniques in a new setting.
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.