If you were a child in the mid-to-late 20th Century, there's a strong likelihood that you took your lunch to school with you, at least for a little while. And while some certainly went with a plain old brown bag, many others decided to express themselves with a metal or plastic lunch box depicting their favorite bands, brands and characters. Like most things from childhood, those lunch boxes can carry a whole lot of nostalgic value alongside peanut butter and jelly sandwiches. Which means people are often willing to shell out big bucks to reclaim them as adults. Here are some lunch boxes that are worth an insane amount of money now.