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 have an eye but I cannot see. What am I?
Glittering points that downward thrust. Sparkling spears that never rust.
What is black when you buy it, red when you use it, and gray when you throw it away?
Goes over all the hills and hollows, Bites hard, but never swallows.
What made Cyclops quit teaching?