How about getting him a custom-made jigsaw puzzle with a picture of both of you or a special memory together? Alternatively, you can get him a puzzle subscription box where he will receive a new puzzle every month. Or maybe a jigsaw puzzle board that will let him work on his puzzles comfortably and store them easily when not in use. Finally, you may want to add a puzzle-themed book, like "Jigsaw Puzzle Knowledge: From Beginner to Expert" to enhance his puzzle-solving experience.
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.