nhweaver beat me to it. Quilts of Valor and Quilts For Kids will supply you with the fabric to make the tops. That will help you with supplies. I just finished a string quilt for QOV. That was on my bucket list of quilts to try, so that is one more done. Look on the internet for local chapters. Our LQS has sew in's for both groups and it was a lot of fun to meet new people.
Sue