Common accessories include removable crumb trays, wire or baking racks, baking pans, air-fry baskets or metal mesh baskets, rotisserie kits, and broiler/pizza racks.
Typical slice capacity in the examples ranges from about 2 up to 6 slices. Pizza capacities commonly list pies from about 9 inches up to 12 inches, and some countertop ovens also note they can fit a 9"×13" baking pan.