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?
When you take away the whole from me there is always some left.
The more you work, the more I'll eat.You keep me full, I'll keep you neat. What am I?
I'm white and I'm used for cutting and grinding. When I'm damaged people usually remove me. What am I?
I am edible pink and a great summer food
No matter how little or how much you use me, you change me every month.