Here is a store selling items made from clay and porcelain in a small store by the highway from Bangkok to Chiang Mai:

You can see there are figurines, hanging items, and other things like cutlery, cups, plates, bowls, garden decorative items like frogs and turtles.
These items are mass produced- these items are common in craft stores. I can find similar designs both in Malaysia and Thailand- but the price is generally cheaper in Thailand.