yup use them all the time. A great source of "fabric" is thrift shops. Sometimes they get sheets & blankets that are practically new. Also I get a lot of fabric, yarn & crochet threads there. It's like store closing sales EVERY DAY!!!!! The one thrift store here in town had a $5 brown bag sale. Everything with a white take that would fit in a paper sack was $5. The gal that checked me out knew how to pack the bag too. Most of that purchase were XL tee shirts & polo shirts that will be recycled into diapers for an orphanage in Haiti. One of my favorite charities.
Hugs
Oma