Carbon Fiber Guitars
During last weeks lessons a student pointed my to a brand of guitars called 'RainSong' guitars which I thought were going to be some boutique brand of acoustic guitars that I had just never came across. I was correct about the boutique nature and the acoustic part, however these guitars have no wood at all in there construction. Purely made of carbon fiber theses guitars should give you something different to add to your collection.
Iv never had the chance to play a guitar that is made of carbon fiber so I will reserve judgment until I do. Looking at some videos online they do sound very similar to wooden build guitars. There is a slight tonal difference of course but if you heard it on a record you wouldn't immediately thing thats not an acoustic guitar.
check them out: http://www.rainsong.com