I made a version of a guitar strictly out of pieces of bicycles. There are a variety of gears and sprockets which make up the body. The neck is from the tube of a BMX bike. The head is off the rear/seat mount from an old ten speed. I even used two different gauge wires from brakes and shift controls as the strings. The string tensioners are from seat clamps. The lever is off a kick stand. The lever has been bolted on and can be removed if desired. Everything else has been TIG welded together. I sand blasted everything and then coated it with several layers of clear coat paint.