How about gifting him The New York Times crossword puzzle book or a crossword puzzle jigsaw puzzle? You can also consider a subscription for an online crossword puzzle website like PuzzleSociety or a personalized crossword puzzle book where the clues are based on your personal memories and inside jokes. Another idea could be a crossword puzzle mug where the puzzle appears when it is filled with hot liquid.
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.