Some People Still Don’t Realize What This Tiny Hole on a Padlock Is For

Beyond Padlocks: Hidden Features in Everyday Items

Screwdriver Hack: Your everyday screwdriver can double as a small wrench by sliding it into a compatible nut—perfect for hard-to-reach spots.
Fabric Swatches: Those little pieces of fabric that come with clothing aren’t just for looks. They let you test detergents and washing methods safely, and can be useful for repairs.
Brass Benefits: Brass isn’t only attractive—it’s naturally antimicrobial. Doorknobs and locks made from brass help reduce the spread of germs.
Fuel Gauge Tip: Ever forget which side your fuel tank is on? Many cars include a tiny arrow on the fuel gauge pointing to the correct side.
Heinz 57 Trick: The classic Heinz 57 label does more than identify the product—the number 57 marks the ideal spot to tap for a smooth pour.
These examples show how ordinary objects often have thoughtful design hidden in plain sight. Next time you notice a small feature, take a closer look—you might uncover something surprisingly clever.