Stumbled on this great article about the Heineken beer brick.
The idea comes from turning wasteful into useful products. Afred Heineken and designer John Habraken coined 'the brick that holds beer' after Heinken took a trip to the Caribbean. After walking on the beach and seeing hundreds of empty bottles but hundreds of locals without homes, he invented the beer brick.
Although it has not exactily taken off, the idea to turn waste into useful products is something we could certainly strive to see more of in the future.