There are lots of tiny bits that go into putting together various survival related kits. First aid kits, pocket survival kits, fishing kits, spare parts kits, etc. You can dump these little bits into a too-big container, but then you get a disorganized mess and have to do some serious digging to get anything out. I like to use small plastic bags, usually intended for crafts, to organize these smaller supplies.They're cheap - usually you can get them in a pack of 100 for around $4-7 - and you can find them in a wide variety of sizes. They offer some measure of protection and waterproofing. And they do the job of organizing quite well. You can sharpie 'em or label 'em if needed, but I usually don't bother.
You can find these baggies at craft stores like Michael's, Joanne's and others. Or they can be found online; Amazon has a wide selection of various sizes
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