A photo guest book is a creative alternative to traditional guest books, allowing guests to leave messages alongside their photographs. Typically used at events like weddings or parties, these books encourage attendees to capture memories and share their thoughts in a more visual and personal way. Guests can take instant photos using a Polaroid camera or digital prints, which they then attach to the pages of the guest book. This interactive keepsake not only preserves memories but also adds a fun and engaging element to the event, making it a cherished item for the hosts.