Two of the hard plastic ziploc containers. Add a custom cozy made of reflectix and duct tape for cold weather backpacking. Cheap, effective, easy to replace, lightest solution in the store. Add lids and you can safely pack crackers, eggs, firestarter, small kitchen items like spice containers...

Redneck solutions - so anti-REI of me. But I have GSI mugs, stainless glacier cup, X Bowl and X Cup (folding silicon things) - and still go back to ziploc containers.
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"In the beginner's mind there are many possibilities. In the expert's mind there are few." Shunryu Suzuki

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