A photo guest book - polaroid and washi tape! Get a cheap but cute polaroid camera, a blank notebook, and washi tape in your chosen colors. Have guests take photos and then leave a message underneath. Love this, but polaroid film is expensive and rare!
On an afternoon when I am free I will be journaling about the wonderful day I had. I will talk about all the wonderful picture opportunities I had that day. Just a hat, sunglasses, journal, and a camera; that would be a wonderful day!