A guitar stand made primarily from concrete. It was the result of a concrete workshop at my school. The concrete embraces the guitar with a protective foam-padding.
The mould was done by hand using mdf-wood.
It's a heavy beast however, and I would've liked to do a slimmer model, but was unsure how thin it could be done without compromising the structural integrity. I'm considering doing a new design using wood and a CNC milling process instead. An illustrated Instructable is on the way.