Our alternative to getting a guest book was to do a wish bowl. I want to use the wishes to make our wedding scrapbook with. I love the way they came out. I did them in our wedding colors, although I wish the color would have came out a little better. The plum didn't really come out like I wanted it to at all (although it looks more plum than in the picture.. I don't know why it looks blue), but they're still fabulous. It was super easy. I made them in publisher actually. There is a template to make postcards and the card stock was just the right size. SO I just inserted clip art (the word bubble), and then put a text box over the clip art. Made the words different colors, and voila! You could probably do the same in powerpoint! Took me like 10 min. max! I was actually inspired by ones I found on Etsy.
And here is the poem that I found floating around on the internet that we really loved, and just made a nice sign out of it: