An event guest book is a book or digital platform where attendees of an event can sign in and leave messages. It serves as a keepsake for hosts, capturing the names and thoughts of guests who attended special occasions like weddings, birthdays, or corporate events. These guest books can include spaces for guests to write personal notes, share memories, or offer well-wishes. They often become cherished mementos for hosts, allowing them to remember who attended and the sentiments shared during the event. Some modern versions may even incorporate photographs or digital signatures for added personalization.