How about getting him an authentic Aboriginal boomerang or didgeridoo from a reputable seller? Another idea could be booking a guided tour or experience where he can learn more about Aboriginal culture and history in Australia. Additionally, you could gift him a book or documentary about Aboriginal art, music or history to further his interests in the subject.
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.