Knowing how to waterproof fabrics like shoes, clothes, and sheets may become very useful skill to learn. I found an article on WikiHow that shows various ways on how to waterproof fabrics.
If you have laundry detergent, soybean oil, wax, or other common household items, you should be able to simply follow the steps in the article below to waterproof your fabrics.
6 Ways To Waterproof Shoes and Fabric At Home