Aluminum Foil Packaging
Have you noticed the tabs on aluminum foil? You can push them in on the sides to lock the roll into the box. This way, it would not move around when you try to rip off a sheet of tin foil.
Half Belt On Jackets
You commonly see this style on pea and trench coats. Apparently, the oversized jackets also functioned as blankets for military men. The half belt lets them gather it in place when they needed to walk. It is now nothing more than a fashion trend, but it is cool to learn its history.