Spackle is a type of paste used for filling holes, cracks, and imperfections in walls and ceilings. It is commonly made from a mixture of gypsum, binders, and water, which allows it to dry quickly and adhere well to surfaces. Spackle is typically used in home improvement projects to prepare walls for painting or wallpapering. When applying spackle, it is important to use a putty knife to spread it evenly over the damaged area. Once it dries, it can be sanded down to create a smooth finish. Spackle is available in various formulations, including lightweight and quick-drying options, making it suitable for different repair needs.