What Am I Riddles

Question: I'm made up of 12 completely different letters but you can type me with just 1, what am I?

Question: I have a neck but no head, 2 arms but no hands, I go with you to school, I go with you to work. What Am I?

Question: Take away my first, I still sound the same. Take away my last, I stil sound the same. What am I?

Question: I am made throughout the world, I am a masterpiece. And to your ears, I am but a humble feast. I am but a traveler, depicted through paper as a start, I can even be made through the work of your heart. What am I?

Question: What is it that can get served but can't get eaten?