I've just gotten some binding holders from Quilt in a Day as they were a daily deal last week. As I send quilts to be quilted, sometimes I have binding sitting around for a few weeks before it is needed. Previously, I put it in a ziplock bag until I was ready to use it, then just let it fall by my feet. Most of my quilts are large - queen or king size - so doing that can cause it to get wadded up, if not actually in a knot.