The most common thing to put in a toaster is bread. However, there are other things you can put in a toaster, such as avocado, cream cheese, or Nutella. You can also make grilled cheese sandwiches, veggie burgers, garlic bread, paninis, leftover French fries and onion rings, tortilla chips, potato waffles, and sweet potato toast. To make these items in a toaster, you may need toaster bags or a modern toaster with wider slots, preset settings, and variable temperature controls.