Why is this the answer?

The answer is pen because this clever riddle describes a small but mighty tool that helps us share our big ideas. Let's look at the clues one by one to see why a pen is the perfect answer for this puzzle. First, the riddle says, "I am the tool, for inspiring many." This is a beautiful clue. Think about all the great things that start with a pen. An author uses a pen to write a wonderful book that millions of people will read. An artist uses a pen to sketch a picture that might hang in a museum one day. A student uses a pen to write down an idea that could change the world. The pen is the quiet beginning of so many exciting and inspiring things, helping people turn thoughts into words on paper. It truly is a tool for inspiring many people to dream and create. Next, the riddle gives a great clue about where you can find this tool: "Buy me in the store, for not much more than a penny." Of course, a pen might cost more than a single penny today, but this old-fashioned clue means that pens are very cheap, or inexpensive, to buy. You can find a pen easily at almost any store, like the grocery store or a big office supply store. They are so common and helpful that they do not cost a lot of money, which is why people often have many pens in their backpack or pencil box. Finally, the last part of the riddle is the most important trick: "Don't overuse me, or my usefulness will go." This clue helps you figure out the difference between a pen and a pencil. What happens when you use a pen over and over and over again? The small amount of ink inside of it runs out. The liquid ink is what makes the pen work, and once the cartridge is empty, the pen stops writing. Its "usefulness will go" when the ink is all gone, and then you have to get a new one. All three of these clever clues work together to tell us the answer is a pen. It is a wonderful and simple tool for writing and inspiring ideas, it is cheap to buy, and it will definitely stop working if you use up all the ink. This riddle is a fun way to remind us how important simple everyday objects can be.