That connective tissue that holds six cans together is getting an eco-upgrade. Now, I generally prefer the boxes for holding cans since it can be made of recycled material and can eventually compost away and not last forever like plastic.
But this solution born from a collaboration between Saltwater Brewery in Florida and We Believers—an advertising agency in New York might be even better. The pair have created rings using spent grain from the brewing process. Basically a bio-degradable ring that is also edible unless fish are gluten-intolerant. Cost and manufacturing might be an issue but since there is a ton of spent grain out there and only so many cows, this could be another avenue if a certain scale can be achieved.
Saltwater Brewery "Edible Six Pack Rings" from We Believers on Vimeo.