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.
All about, but cannot be seen, Can be captured, cannot be held, No throat, but can be heard. Who am I?
What is bought by the yard by is worn by the foot?
A precious stone, as clear as diamond. Seek it out whilst the sun's near the horizon. Though you can walk on water with its power, Try to keep it, and it'll vanish within an hour.
What is yellow, looks like the moon and has seeds?
I have two eyes in the front and a lot of eyes on my tail