What the newlyweds did was awesome. After looking around a bit online, what they did was get some custom printing done on a nice cigar box and added some special wedding postcards.
The postcards are super nice because what they do is let you get more than just the typical name you would get form your guests in the traditional guestbook format.
The post cards asked for how the guests met the bride/groom, a favorite memory and also feedback about the special day itself.
HOW TO DISPLAY:
They presented the cigar box with some nice candles and other things to dress it up. Below you can see what the set up looked like with a the uplighting turned on. This put an interesting pink hue on everything for a great added touch!