Sometimes the musical instrument industry seems to evolve slowly, but not when it comes to creating wild new guitars. Traditionally, a guitar is defined as an instrument that has a long, fretted neck, flat wooden soundboard, ribs, and a flat back. That renders this collection of awesome axes undefined. The completely custom made guitars shown in this gallery go from finely carved craftsmanship to downright funky. Here are most unique and cool custom guitars around the world.