The things that we use every day become such a huge part of our routines that we seldom notice their simplest features. However, look carefully and you may notice that your favorite items have been designed to do much more than you thought. For example, the little brushes by the side of an escalator are not for polishing your shoes but are actually an interesting safety feature.
Or have you ever noticed a tiny groove on the bottom of your favorite coffee mug? No, it's not broken! In fact, tons of things you use every day without thinking twice are equipped with tiny gizmos. And here are 18 day-to-day things that have always had some amazing hidden features that we probably never knew about Date: 2022-04-19
