The Knapsack, the Hat, and the Horn

Do you think it is smart to exchange a magical table cloth which fills with food every time it is spread out with a simple sack with seven soldiers inside? Well the youngest brother in our tale did so. But he had a plan. He would use the soldiers to fight on his side and take the tablecloth back. Then he saw a magical hat which could command cannons so he wanted to have it as well. He did the trick again. But do you think he would get far with this wiles?