A day in the life of Ivan Stoiljkovic, 6 years old, often includes having relatives throw coins at his chest or stick frying pans to his stomach. Ivan, you see, claims to be a &amp;#8220;human magnet,&amp;#8221; and his family in Koprivnica, Croatia, is fond of using him as a utensil rack. Spoons, forks, knives, nonstick [...]