How about a beautiful edition of one of Sylvia Plath's books? You can find a nice hardcover edition of "The Bell Jar" or "Ariel" and pair it with a cozy blanket or a candle to make it extra special. Alternatively, you could look for a biography or memoir about Sylvia Plath, such as "The Silent Woman" by Janet Malcolm or "Pain, Parties, Work: Sylvia Plath in New York, Summer 1953" by Elizabeth Winder. You could also consider getting your friend a journal for them to write their own poetry in, as Sylvia Plath was a celebrated poet as well as a novelist.
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.