From Martha Stewart Weddings: 

Chocolate bars adorned with the faces of the bride and groom are sweet in more ways than one. Choose a few favorite photos, then print them using an ink-jet printer or photocopy onto lightweight paper. (Enlarge or reduce images if needed.) With a paper cutter, trim so photos are slightly shorter than candy bars. Remove outer wrappers but not inner foil. Wrap each candy bar with a photo, and secure in back with double-sided tape. Adorn with waxed twine tied in a small bow.

I LOVE this idea!