A kit can refer to a collection of articles for personal use, a set of tools or supplies, a set of parts to be assembled or worked up, a group of persons or things, or a container for any of such sets or collections. It can also be a set of parts that can be put together in order to make something. Additionally, kit can refer to special clothing and equipment used when taking part in a particular activity, especially a sport. For example, a first-aid kit is a set or collection of tools, supplies, and instructional matter for first-aid purposes.