A couple of products have been recommended. The first is called Ultra Gel (this is made from corn) and comes from a company in Utah. The company calls it duct tape for the kitchen. It is supposed to work great for soups, gravies and fruit.
The second product is a gluten-free, all-purpose flour from a company called Domata Living Flour. It's ingredients are rice flour, corn starch, tapioca dextrin and xanthan gum. They also have a seasoned flour and a pizza crust mix.