I have a bedroom (my quilting cave) with very large closet, plus part of 2nd spare bedroom for my design wall. In addition, since it's just the two of us and our cat children, my DH suggested we turn the family room into an organized stash storage and cutting room -- which we did. So now I have a good chunk of the house for quilting and sewing activities.
(DH have the entire 2-1/2 care garage for his woodworking hobby.)