The final games of the 2010 FIFA World Cup will  be played this weekend in South Africa. No matter whether you love or hate to watch soccer, chances are you've heard the unique buzzing sound that persists in every stadium, during every game.

Many of the vuvuzelas that have been seen during the 2010 World Cup matches have been made of plastic, but one Cape Town company's idea for a version made from kelp has the eco-world (literally) buzzing.

Producing a noise quite similar to that of a giant house fly hovering over the stadium, vuvuzelas are traditional African horns that were used to summon villagers to community gatherings.

Adam Carnegie first made brightly colored kelp vuvuzelas for a fundraiser at his son's school. When he saw how excited people got about the traditionally decorated horns, he founded the Kelp Environmental Learning Project (KELP) in 2008.

"Taking the loudy, wildy vuvuzela, and the magic that brings to the game, we are able to create something just a little bit more unique -- and of course it's natural," Carnegie told CNN.

Kelp is a sea plant that washed up naturally on many beaches around the world. Most people might dismiss it as smelly and gross, but Carnegie sees a wonderfully unique raw material. When kelp is dried out by the sun,  it transforms into different shapes -- from straight and long, to curly and curvy. The trick for Carnegie and his small team of artists is simply to find the right ones.

In addition to enriching South African culture with the native designs he paints on the kelp vuvuzelas, Carnegie hopes that his small business will be able to uplift the local community by providing a source of sustainable employment and entrepreneurial skills education.

Image Credits: K.E.L.P