ORIGINAL: ahankster
Another suggestion.
Go to your nearest wallyworld and go to the cloth department. They have a $1 a yard sale section in almost every store. Look around and you can probably find some 100% cotton cloth there that will work great. Buy two yards for two dollars and you will have enuff patch material for a couple of years.
This is what I like to do. Any fabric store usually has a bin where they keep bolt remnants and mark them down to get rid of them. Any soft cotton fabric will work but Ilike lightweight flannel, preferably in tartan plaid.