How about a personalized coding mug or a T-shirt with a coding pun or joke in it? You could also get him a book on advanced programming or a subscription to a coding magazine. For a more extravagant gift, consider a new high-end laptop or a class or workshop on a specific programming language or skill. Another idea is to create a personalized software application that could help to streamline a specific task, an idea or a hobby related to his interests. The app could have his name, pictures & preferences embedded in it.
Or you can get him a star map with the date of your anniversary.
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.