Pinner says: Good idea. did this for our daughters for high school and college graduations but just "framed them" with school-colored poster board so they're easy store when they are ready to put them away.
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.