Calico Moon has a doll closet made from corrugated cardboard. It is relatively inexpensive (IMHO). It does get more expensive as you have to buy wonder under and fabric. However, they do work beautifully. I made one with my daughter about 15 years ago and another with my goddaughter two years ago. Both girls were about 7 at the times and they loved helping with it. In fact, it turned my goddaughter onto sewing and quilting with me--what could be better. I think their website is calicomoon.com but google it.