In Catalonia, an area of Spain, they throw parades and celebrate a day in honor of Sant Jordi (Saint George). According to the almighty Wikipedia, the day is also known as El Dia del Libre, or The Day of the Book.
Wikipedia also states that "Historically, men gave women roses, and women gave men a book to celebrate the occasion—"a rose for love and a book forever." In modern times, the mutual exchange of books is also customary."
Conveniently, I have a book published. The Man Makes You Work: How the Rich and Powerful Hold Down Everyone has gotten great reviews on Amazon. I have also sold many in person. People like it.
It would make a great Sant Jordi Day gift.
Have a very enjoyable and happy Sant Jordi Day!