There are so many types of creative guest book ideas out there today. The days of signing your name on the line are gone and interactive guest books are becoming more common. The first of our unique guest book ideas caught our eye because of the cute mailbox and fun postcards featured in the first wedding below. We love how this guestbook features postcards from the bride and groom’s favorite state and really showcases who they are and the places they love! In addition, the guests can write a note that the bride and groom can cherish for years to come. The vintage-inspired mailbox is a simple, yet unique way to dress up your reception space. Since there are so many ways to tailor this guestbook idea, it can be crafted to stand out at any wedding- vintage, modern, and anything in between!