Droog furniture has found a way to re-use fallen trees. Swiss designer for the company Jurgen Bey has come up with this genius sustainable concept: the Tree Trunk Bench. By adding vintage bronze chair backs to the trunk the tree is converted into a modern seating arrangement. For those who wish to go green with a bit of class and style, the Tree Trunk Bench is an innovative way to re-use something often found in nature. Seeing as how transporting a tree trunk seems a tad ridiculous — and most certainly defeats the purpose of having an eco-friendly couch — you can purchase the chair backs themselves and add them to a fallen tree trunk in your nearby woods.