How about a personalized classic novel? You could select a book that you know he really likes and order a personalized edition that has his name, or yours, or even a message to him on the cover. It's a thoughtful and unique gift that he'll treasure for years to come.
Alternatively, you could also consider getting him a book subscription box, which delivers a new novel to his doorstep each month. With options such as Book of the Month Club or Powell's Indiespensible, you could choose a subscription that matches his reading preference, whether it's classic literature or something more modern. This will give him the opportunity to discover new authors and genres throughout the year.
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.