Spackle comes in different varieties, the all purpose one being the best suited for the ceiling. It is made up of limestone, mica and a few other additives. Before buying, estimate how much you'll need by measuring the room. You'll also need sparkling knives of different sizes which can be used for spreading, as well as corner tools if desired and trays and containers to mix the Spackle. And of course you will also need a step ladder to stand on while you tackle the ceiling, or should we say Spackle the ceiling.