Living in a high-desert environment, I recently decided a USGI 2 qt. canteen will be my constant companion. It's the most comfortable way I've found to carry this much water, since I don't like hydration packs and usually don't need the capacity of a backpack (plus they make you sweaty). The secret is the really wide shoulder strap, which distributes the weight of all that water very well. Only problem is, the canteen carrier leaves much to be desired. It only has that one tiny pocket out front. But I found a couple ways to stuff more into it. The label under the lid can be turned into a pocket by simply cutting a slit into it. I stuffed a little tinder kit in there (fatwood & pj cotton balls): In the picture above, you can see that I cut two smaller slits in the nylon shell at the back of the canteen carrier, under the lid. These hold a firesteel and a mini Maglight perfectly, and their lanyards are connected by an S-biner so they don't fall out. These things, and a few more, would also fit in the main pocket. But I don't want anything in there that would rub or cut the canteen, since it's relatively fragile. Also, what's that orange thing slipped behind the canteen? It's an AMK 2-man survival blanket wrapped in a 55-gallon drum liner: The tiny pocket out front is the perfect size for a mini Altoids tin, which holds 10 stormproof matches, a tiny emergency whistle and 4 water purification tabs. An energy bar fits in the big main pocket beside the canteen. And that foil thing is the seal from a peanut can that rides in the main pocket in front of the canteen. It works great as an ultralight bowl to water my dog and avoid wasting water. The jacket you see there is a Patagonia mil-spec wind shirt tied around the shoulder strap. It's perfect protection when the wind kicks up or a thunderstorm rolls in. With this kit and a knife on my belt, I feel pretty well covered for a few hours of exploring. Who else uses the 2 qt. canteen? Would love to see your setup.