The Christmas crazes that helped transform holiday shopping into the frantic, no-holds-barred $1.1 trillion frenzy that it is today. From a hit doll in the Great Depression, to a $5 plush reselling for a thousand times its value, each season's 'must-have toy' makes the top of Santa's list for its own improbable reason... and sends desperate shoppers to unbelievable lengths just to buy it.