How about a subscription to an online cultural history lecture series? The Great Courses Plus offers a wide range of video lectures on various cultural and historical topics, ranging from ancient history to modern times. This way, your grandma can enjoy lectures on her own time and from the comfort of her home. You could also consider getting her a gift card for a local museum or historical site that offers guided tours or lectures on their exhibits. This not only aligns with her interests but provides the opportunity for her to explore and learn in a more hands-on way.
Or you can get her 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.