How about a personalized kendo equipment bag or a new kendo shinai (bamboo sword)? You could also get him a kendo training DVD, a book on the history and philosophy of kendo, or a gift card for a private lesson with a kendo instructor. Another idea could be a kendo-inspired piece of art, like a painting or sculpture, to decorate his home or office.
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.