Concur.
I have made a few and have a pro made one as well. I keep them in different bags along with some other goodies. Great fuel, for them is Heet Fuel Additive (any gas station, 7-11, most grocery stores, @ $2.00 and will give you several cooks, this is 99% alcohol vs 70% isopropanol [most common] or 90% found at the pharmacy section of the grocery store - more caloric energy / ounce). They are great (outdoors) except in really nasty winter conditions. In the winter I keep an MSR XGK in the vehicle as well.
A cook will provide some heat to a small space as well.
Little tea, little food, little water - makes being stuck / stranded not quite so SOL. You can fit all the basics in a camping mug with a lid.