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 can fall off a building and live, but in water I will die. What am I?
When I point up, it's bright. When I point down, it's dark. What am I?
When you buy me I am costly, but the only use I have is hanging only. What am I?
I am gold and can be black and white I'm a symbol for a nation when freedom took flight.
I flow from the Homerβs mouth when he sees doughnuts.