Egg Box - No, it isn't software exactly. But it is a great example of a design that works well at revealing the beauty and nature of the content to the user rather than hiding it, which is what UX design ought to do more.
Black & White
Moj Sokic Concept Packaging designed by Snežana Jeremić - http://www.packagingoftheworld.com/2015/11/moj-sokic-concept.html
If It's Hip, It's Here: Stack and Scare by Invisible Creatures. From Product to Packaging, Blocks Don't Get Much Cooler Than These. Good.
creare sagoma ciotola con gli ingredienti : CAMPAGNA INGREDIENTI SANI
Pacman Packaging by Craig Sutton... - a grouped images picture - Pin Them All