I saw men like this all over northern Thailand; sitting at their folding tables selling their wares, usually to other men. I didn’t realize what they were peddling until we happened on a small shop in a temple one day and realized where they originated from.
They are amulets, much like the Saint Christopher pendant that many travellers wear to protect themselves. Thais buy them, or even rent them, to repel bad luck or evil spirits, to ward off sadness or sickness, and to overcome obstacles to good fortune.
Cast in clay, carved from wood, or imagined in silver or gold, they are created by the monks of the temple in the image of Buddha or other revered monks. They are often kept in a small case, held close to the body, and are called upon throughout the day to help the wearer gain strength.
They are bought and sold all over Thailand in temples and, as we often saw, from folding tables wherever they could set up.