Answer:
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. What am I?
I am an instrument capable of making numerous sound but cannot be touched or seen.
The letter S is added to pluralise most words in the English language. eg. Letter to Letters Word to Words and Language to Languages. But I am a word that is pluralised with the addition of the letter C.
Every dawn begins with me. At dusk I'll be the first you see and daybreak couldn't come without. What midday centers all about. Daises grow from me I'm told. And when I come I end all code but in the sun I won't be found. Yet still each day I'll be around.
I may be of the eye, in order I am pie. In my center there is a star, I keep medics where they are. What am I?
Almost everyone needs it, asks for it, gives it. But almost nobody takes it.