How about getting him a physical cryptocurrency wallet? This is a secure and offline way to store his cryptocurrency. You could also consider purchasing him a book about blockchain technology, such as "The Truth Machine" by Paul Vigna and Michael J. Casey or "Blockchain Basics: A Non-Technical Introduction in 25 Steps" by Daniel Drescher. Another great option is a ticket to a cryptocurrency conference or seminar to learn more about the industry and network with other enthusiasts. Finally, you could also consider purchasing him a piece of blockchain-related merchandise, such as a t-shirt or hat with his favorite coin's logo on it.
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.