For many children, trick-or-treating on Halloween is the best part of October. Think about it: when you were a child, you might have liked Halloween costumes, or running around after dark... but the real fun was the loot! Coming home with lots of treats after a night around the neighborhood was the goal, even if you knew your parents would ration it out for you. Right? Moms (and dads!) remember this from our own childhoods, and we do our best to put out treats we know the neighborhood kids will love. But what do we do when our child has a food allergy -...