Gather any excess fabric you have around the house to make a rug. Sheets, T-shirts, jeans and wool suits provide good material. Yarn and a large crochet hook are also needed to complete the rug.
Rip the fabric into strips that are 1 to 2 inches wide.
If you want a rug of a specific size, make a test swatch that is 1 square foot. Weigh the swatch, and multiply the weight by the number of square feet in the finished rug size. The weight of the fabric is also equal to the total weight of the necessary yarn.
Join fabric strips by tying or sewing them together.
Start the rug with a chain stitch, and continue for the desired width of the rug. Once the initial row of chain stitching is complete, crochet the rest of the rug with a half double crochet stitch. Crochet from left to right and back again. At the end of each row, before turning back, make a single chain stitch to ensure that the ends are straight. Repeat the process until the desired length has been reached, and finish the rug by weaving in any loose ends of yarn.