Unique Wedding Favor Idea

I am trying to find a cheap and unique idea for favors. I was thinking about buying a bunch of blank CDs and burning some songs that were played at the reception as a reminder of the night and decorating them with the label maker from best buy or circuit city. Putting something from the theme of the wedding would be best, such as the type of flower you used. Just search images through google and save it to a file, then you can print them onto the CD.