Has anyone tried these new Ziplock Vacuum Bags?
Compared to normal storage bags, they are a little expensive. But they have some sort of valve that you place a special pump over and suck the air out of the bag. What I THINK I like about that is the result is a firm package that I'm thinking will help protect breakable foods from getting crushed, not to mention minimizing the space needed for your food bag. But I haven't tried these on the trail yet.
The pump is less than 2oz, so it seems small and lightweight enough to carry along in the food bag.