The Science Museum have a really ace exhibition on at the moment called "Hidden Heroes" which runs until June next year. It explores the genius of everyday things. The show reveals original sketches by the inventors, history of the object and development over time. I thought this show was great because it let me see the beauty in practical things - there is nothing more beautiful than when something works well and functions perfectly. 44 objects are featured , the stars of the show included - bubble wrap, the condom, the clothes peg, tetra pack, velcro, the barcode - among many other superstars! The multi-pack carrier was one of my favourites in the show. In my opinion, it is revolutionary how six beverages can be held at such a low expense and using so much less packaging material.
The title "Hidden Heroes" is so apt, as to me good design should be almost invisible. If you can't make it to the show, the website is a pretty good reference despite being annoying to navigate.