There are a few different ways that you can go about organizing your leftovers in the fridge. One option is to simply keep them all in one designated spot, such as on a shelf or in a drawer. This can help to prevent your fridge from becoming too cluttered. Another option is to group leftovers together based on when they were cooked. For example, you could keep all of your breakfast leftovers on one shelf and all of your dinner leftovers on another. Finally, label your leftovers with the date that they were cooked so that you can easily tell how old they are.