Now why o why didn't I think of that?? I have a computer chair whose back is broken but currently doing a great job as a shelf and using a chair for sewing which is not really suitable or comfortable. Why did I just assume that as the back was broken the chair was useless?? I could give my computer chair a new lease of life as a sewing stool and the chair can be the shelf! I'm already thinking of what fabric to cover my "new" stool with!! Thank you so much finch.