What is the purpose of the small pocket today?

Even though it's no longer used for watches, this little pocket remains very practical. Many people use it without even thinking about it to store small items.
For example, it can be used for:
- coins,
- a key,
- a USB key,
- a guitar pick,
- headphones
- a transport ticket,
- or even a ring or a small piece of jewelry.
Its small size makes it ideal for keeping safe items that could be lost in a large pocket.