Reusable gel packs. These are cold therapy packs which contain a form of gel and are kept in the freezer until required. They are reusable and in many cases can also be heated either in very hot water or a microwave to offer warm therapy instead.
A clown car is a prop in a circus clown routine. A common example of such a routine involves an implausibly large number of clowns emerging from a very small car, to humorous effect.
The World Clown Association (WCA) is a worldwide organization for clowns Jugglers, Magicians, face painters, and clowning. It holds an annual convention, mainly in the United States.