These beautiful "tree speakers" were handmade from 14" pieces of an Elm tree infected with Dutch Elm disease. The tree was removed from the Brown University campus in 2004. It now lives on in the form of two DIY speakers. The giant tree's death ultimately led to the birth of The Elm Tree Project, a venture between Brown University and the Rhode Island School of Design to explore various forms of art that could be made from the deceased tree. Instructables user Noahw took it upon himself to turn what was once a remarkable tree into some remarkable speakers.
While the list of tools used is a bit overwhelming to many of us (it calls for a chain saw, band saw, and a very powerful drill), it does serve as inspiration for any audiophile looking to connect with nature. Evidently, the speakers sound amazing—no doubt due to the dense, solid wood cabinets.
See the entire process at Instructables.