You've put together a great kit frisket. Others had made good suggestions, like adding a shelter element or water purifying tabs. I'm learning and rethinking my own kits as we go. (You put me over the edge to buy that winchester knive I've been eyeing.) I've got a question: why tupperware and not a metal container that you could boil water in? I've got a few with lids that appear to be about the same size, and there was a thread a little while ago that showed off little baking pans that would probably work well too. They won't carry water like the tupperwear but carrying a water bottle, or the suggested turkey roasting bag, would solve that problem