That small opening at the end of a safety pin was designed for control, not ornament. By threading a cord, yarn, or string through it, tailors could turn a slippery, vanishing pin into a guided handle, steering it through narrow fabric tunnels without losing their grip. It meant no more fishing blindly inside waistbands, no more twisted elastic, no more half-finished hems abandoned in irritation.

That quiet detail belongs to a time when tools were expected to be clever, not flashy. Before drawers overflowed with single-use gadgets, people leaned on ingenuity: a bit of wax to calm unruly thread, a reinforced corner to bear years of strain, a pin that could suddenly behave like a needle on a leash. Noticing that tiny hole now is like hearing a whispered reminder: the smartest solutions are often hiding in plain sight, waiting to be used again.