I appreciate the movement of many doll companies to represent greater diversity in their dolls, including children with disabilities. However, I feel that most doll-makers aren't quite there when it comes to blindness. They have wheelchairs, hearing aids, and even service dogs, but no white canes. I found an excellent post here about why that is a problem. Most blind kids in the target age range are far more likely to use a white cane than a guide dog. I remember how empowered my newly-diagnosed daughter felt when she first met another blind child, and he gave her a white cane! Children need to know that there are others out there like them.
Doll-sized canes are super easy to make. (I am surprised American Girl has not capitalized on that fact yet and started selling them at $30 a pop.) I found many great tutorials, and I've made several dolly canes of my own using dowels, balloon sticks, or even rolled up paper. Click here for an easy how-to, and a great blog about raising a young girl with progressive vision loss.
Cute as a Daisy is a great Etsy Shop selling cute, authentic doll canes for a good price. There are two different styles, $10 each. This shop also has great cloaks for dolls and girls. I did find a few other online sites that sold white canes for dolls, but most of them come with a guide dog, and they aren't very realistic.
The National Federation of the Blind has a free white cane program for blind individuals to receive a free white cane. They have many sizes, including kiddie canes, and you can order a new one every six months (which is just about how long it takes my daughter to either break or grow out of her old cane). For a small donation, you can help the NFB provide free canes to others. They even list the name of the donor on each cane they send. I love reading the name on my daughter's new cane and talking about how someone made a donation to help out people like her.