A watercolor kit is a collection of supplies designed for painting with watercolors. Typically, it includes watercolor paints, brushes, and paper. The paints come in tubes or pans, allowing artists to mix colors easily. The brushes vary in size and shape, helping to create different effects on the paper. Many watercolor kits also feature a palette for mixing colors and a water container for rinsing brushes. Some kits are designed for beginners, while others cater to more experienced artists. They are popular among hobbyists and professionals alike, making them a versatile choice for creative expression.