OK, this may seem obvious, but you'd be surprised how many home cooks don't have one in their kitchen. (Do you have one? We're willing to bet the answer to that is a mumbled "No.") But, not just any old fire extinguisher will do. Look for a Class K fire extinguisher, which contains a special chemical (potassium acetate, for the MythBusters crowd who really want to know) and dispenser that sprays at a lower pressure so that oil doesn't splash outside of the pot or fryer. Fire extinguishers also have an expiration date, so make sure to check on it once in a while. After all, the best way to avoid an accident is to prevent one.