Answer:
I scribble forms of the finest letter, And repel elements of the harshest weather. I am an arrow-aimer and a dust-breaker.
What is it something that you always have but you always leave behind?
I am the tool, for inspiring many. Buy me in the store, for not much more than a penny. Don't overuse me, or my usefulness will go.
I have three hundred cattle, with a single nose cord
What has a mouth but can't chew?
What language does a billboard speak?