My husband officiated a wedding over the 4th of July weekend, and I was lucky enough to get to attend. There were so many amazing details, and this was one of my favorites. Instead of a guest book, they had a print of a tree minus the leaves. On the table was a green ink pad that each guest used to make a thumbprint leaf on the tree. Then everyone signed their name by the leaf. I found a store on etsy that sells these precious prints, and they're a great deal in my humble opinion. If you're interested, click here.