How about getting your friend a subscription to a cultural history podcast or online lecture series? Some popular options include "The History of Rome" podcast, "You Must Remember This" podcast (which explores the history of Hollywood), or "The Great Courses Plus," which offers a variety of lecture series on topics such as ancient civilizations, medieval Europe, and world religions. Additionally, consider purchasing a book on cultural history from her/his favorite time period or civilization.
Or you can get her/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.