I think Evian was the first one out, now about 10 years ago. I am thinking of the PET bottle for water that was structured in a way that made it easier for the consumer to crush the empty bottle into a handy piece of plastic to dispose. But I haven’t seen a lot since, except for the I Lohas bottle from Coca-Cola Japan. http://bit.ly/Xretb
It is a shame because it is such a good idea, to have a packaging solution made for easy disposal. The I Lohas bottle scores even more points by being both light weight and made from plant material. I think the main point is that it is pre made to be easily twisted and compressed into a neat chunk to dispose. This is a packaging feature that strongly underlines the sustainable qualities of a product.