How about tickets to a rock concert of his favorite band? Concert tickets make a great gift, and they can be a fun experience for the two of you to share together. You can also get him a t-shirt or hoodie from the band's merchandise store beforehand as a surprise. Other ideas include a vinyl record or CD of his favorite album or artist, a personalized guitar pick with his name on it, or a book about the history of rock music. If he plays an instrument or sings, you could also consider getting him a music lesson or studio recording session.
Or you can get him a star map with the date of your first kiss.
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.