Cookie Sheets / Pan - Cookie sheets or cookie pans are square or rectangular sheets usually made of metal that can be put in the oven. They have either no rims or very small rims to keep cookies or other items from overflowing off of the sheet or in the oven.
Baking Mats - A baking mat is a flat mat for baking purposes or rolling dough. Jelly Roll Pan - This looks like a cookie sheet but has slightly higher rims.
Crisper/ Chip Pan - This is a pan with rims, usually in the shape of an oval or a hexagon. The bottom of the pan has lines with holes in it.