I'm trying to reduce my use of plastic in the kitchen-starting with how I pack my lunches. Found these Sigg lunchboxes on Reusablebags.com. Little more expensive than some of the steel alternatives, but very well made so I think we'll be happier in the long run.
Also bought these small steel containers for nuts that fit inside the boxes. I wish they didn't say "Kid Konserve," but they were the cheapest I found.