How about a bluegrass vinyl record set or CD collection? You could even get a personalized vinyl record with his name or favorite bluegrass band's name on it. A bluegrass instrument such as a banjo or mandolin would also be a thoughtful gift. If he's interested in the history of the genre, consider a book on the subject or a documentary about well-known bluegrass musicians. Finally, concert tickets or a gift card to a bluegrass festival would make for an unforgettable 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.