This riddle asks you to think of something you open all the time without grabbing it, pulling a handle or using your fingers.
The clue points to something your body can open naturally.
Answer: Your eyes.
You can open your eyes simply by using the muscles around them, without using your hands at all. It is such an automatic action that we rarely think of it as “opening” something.
That is why the riddle feels more complicated than it really is. Once you stop thinking about doors, boxes and containers, the answer becomes much easier to see.
