In the absence of cat litter, several alternatives can be used temporarily. Regular dry sand is a viable option, especially in rural environments; crushed coal ash, stove ash, and similar materials can also be used. However, these alternatives are less absorbent and less prone to clumping than commercial cat litter, produce more dust, and are less effective at deodorizing. Additionally, waste paper, newspapers, or toilet paper can be used to make makeshift cat litter, but these also suffer from poor absorbency and inadequate odor control.

It's important to note that these alternatives may require more frequent changes to maintain a clean and hygienic living environment for your cat. Also, since these alternatives are not as effective as cat litter, it's recommended to find a suitable cat litter alternative or purchase new cat litter as soon as possible to ensure your cat's health and comfort.