I once saw a trio that was made up of a comb player, a saw player, and a guy that played the washboard in ways that I never knew were possible. It was really a cool show and the quality and variety of the music were so much more than I would have ever expected.
I guess this goes to show that music can come from strange places. We tend to think of instruments these days as being complicated and the products of intense craftsmanship or technology. Think about a french horn that looks like a maze or a keyboard that can make a million different tones.
Most instruments started out with ideas as simple as the musical comb. Think of the rattle or clapping and whistling or a simple flute made from bamboo. It doesn't have to be complicated to be beautiful.