So our guestbook will be a journal that we lay out with pens and maybe some markers and/or colored pencils. We really want everyone to be creative (if they want to!) and leave pictures or quotes, poems, sayings, etc. We'll read everything on the way to our HM. I want to set up a picture frame with something explaining "you don't just have to sign your name robotically". But I can't think of anything. Ideas?