Pins are small, pointed objects used to fasten or secure items together. They can be made from various materials, such as metal or plastic, and come in different shapes and sizes. Common types of pins include safety pins, which are used to hold fabric together, and push pins, which are used to attach papers to bulletin boards. In addition to their practical uses, pins can also serve decorative purposes. For example, enamel pins are popular accessories that people wear on clothing or bags to express their interests or affiliations. Collecting pins has become a hobby for many, with enthusiasts seeking unique designs and limited editions.