I love this idea. An envelope guest book. You just take a store-bought scrapbook/album and glue envelopes into it. Lay out colored pieces of paper for guests to jot notes down on, and then they can place them in the envelopes.
Easy Pop Up Christmas Card - Paper Fan Christmas Tree Cards. Working with concertina paper folding techniques, this is a quick and easy card to make for the holidays. traditional Christmas Tree and white Winter Tree Card versions.