Riddle: what always works with something in its eye, helping to get the job done?

Introduction / Context:
This riddle uses a figurative expression eye to describe a small but important part of a tool. It asks what always works with something in its eye. At first this sounds strange, because we imagine getting something in our own eye as a problem. However, the riddle points to an object whose eye is designed to hold something essential while it works. Recognising that eye can mean a small opening or loop, not just the organ for seeing, is key to solving this puzzle.

Given Data / Assumptions:

• The object has an eye as part of its structure.
• It always works with something in that eye.
• The eye is not a living eye, but a functional opening.
• The answer should be a common tool or object used in daily life.
• Only one option matches the standard wording of this classic riddle.

Concept / Approach:
A sewing needle is the classic answer. The small hole at the blunt end of a needle is called the eye of the needle. The needle only does its job properly when there is thread passed through this eye. In other words, it works with something in its eye. A bottle may have an opening, but we do not call it an eye, and many bottles work empty as containers anyway. A camera has a lens sometimes compared to an eye, but it does not always need something placed in it to work. A shovel has no part usually called an eye. Therefore, needle is the most accurate and textbook solution.

Step-by-Step Solution:
Recall that in sewing, you take a needle and thread. You push the end of the thread through the tiny hole at one end of the needle. This hole is known in English as the eye of the needle. Only when the thread is inside this eye can the needle pull the thread through fabric and do useful work. Thus, the needle works with something in its eye, exactly as the riddle describes.

Verification / Alternative check:
Consider a bottle. Its opening is called a mouth or neck, not an eye, and it can contain liquid but is still called a bottle even when empty. A camera has a lens often compared metaphorically to an eye, but it does not require a separate object to sit inside that lens in order to function. A shovel has a handle and blade but nothing called an eye in standard usage. Only a needle has a specific part historically named an eye and only performs its main sewing function when thread is in that eye. This confirms needle as the correct answer.

Why Other Options Are Wrong:
Bottle, camera and shovel fail the naming detail that the riddle depends on. None of them have a feature widely known as an eye that must be filled with something for work to happen. Even if one stretches metaphors for camera or bottle, the traditional riddle taught in English focuses on needle and the eye of the needle phrase. Using any other answer would ignore this important vocabulary point and the way the riddle is commonly used to reinforce it.

Common Pitfalls:
A frequent mistake is to think only of human eyes and imagine workers who keep something in front of their eyes, like goggles or glasses. This misinterprets the clue as a reference to safety equipment rather than tool design. Another error is to pick bottle because liquid appears through its opening, but this does not match everyday language. When solving riddles, always ask whether the unusual phrase used, such as eye, has a specific technical meaning in the context of tools or objects. Remembering that needles have eyes is the key to this puzzle.

Final Answer:
The thing that always works with something in its eye is a sewing needle.