designboom has an article on a natural and organic cocoa drink product that is produced by the Bribri women of Talamanca, Costa Rica. The "hockey puck" sized patties, which actually don't look that promising on initial inspection, are actually 100% cocoa with no sugar or anything else added.
You use a little grater, which also acts as a stirrer, to grate up the blocks and add hot water to make the drink.
fuseproject spotted the opportunity and realised that all it need was a design kick to get it going, so designed the little sack that the patties come in, the logo and the little grater. The project is designed to raise awareness of organic cocoa production and hence help save the rainforest.