A griddle is the perfect grilling tool for people who love to grill items other than meat. While vegetables and potatoes can fall through the top of a regular grill, a griddle provides a flat surface for cooking without allowing food to escape. Look for heavy-duty cast iron or steel griddles that are coated with a non-stick enamel or stainless steel finish [source: Adler and Fertig]. Grated units allow more heat to reach the food, which can help it to cook faster. Smooth units are more versatile, and can be used for everything from asparagus to scrambled eggs. Perforated griddle sheets offer a third option to allow heat to penetrate the food while keeping veggies from falling through the holes [source: Truini].