Having a six year old son, I'm constantly having to pack him lunches because he's so picky he won't eat the school lunches most of the time. I've tried several types of lunch boxes, and end up having problems with them leaking or popping open in his backpack. It's always a nice surprise to open his backpack and finding crushed crackers coating everything in there. Yeah.
If you'd like to get a secure eco-friendly lunch box too, you can get one here: