Repurpose Towels Into A Bath Rug. Tools: Grid from a craft store (size: whatever you want mat to be), old washed bath towels, scissors. Cut towels into 3/4" wide and 6" long strips and tie them on to grid. No need to be fussy or neat.
How to make a rug w/ a hula hoop. Here is the perfect craft to recycle t-shirts - make a woven rug using a hula hoop! There are other ideas too so check them all out, and the directions, at Family Fun.