Wicked Baskets

It is said that a sorcerer named Man of Hunger has a crew of thieves which he controls by magic. He knows a spell which turns them into open wicker baskets. At will the 'basket' can sprout legs and run away at great speed, stealing whatever is placed inside it. After 12 hours in a quiet and dark place the basket will turn back into a person. They are careful to have an accomplice empty them first, because if they do not it will be as if they had eaten whatever is inside the basket. The sorcerer keeps command over his unwilling thieves since the same spell which turns them into a basket, also turns their heart into a shell, shirt or other object, which the sorcerer keeps while they work.