I love the fabric bag idea, but I know myself.. I do good to get the project into a ziplock bag. I carry my PIGs full of ZIGs (? ziplocks in grocery sacks) every where we travel , car trips, plane rides even in the back of a covered wagon once ( for a civil war reenactment)
You do what works for you.... and I'd never get it that much together... i'd love to see pics!