This post falls in the category of “details that make a difference.”
Look at this picture. What do you see?
Look again. This brand tells you when the box is nearly empty.
First of 10 blue tissues before the box is empty. A cue to stock up.
Subtle, right? Here are the images, side by side.
This kind of care in product design makes for a superior UX. Small details that surprise and delight or make life a little bit easier, sweeter, smoother.