I spent several days trying to find a *small* metal container online that could be used to hold a pocket-sized psk and boil water, and had no luck. I'm probably going to base my pocket / backpacking kit off a Ritter pocket kit (vinyl pouch) with a disposable aluminum mini-loaf pan folded around it.
The closest thing I found to pocket-sized metal that seals is the MSR Stowaway pot http://www.rei.com/product/401131 , which comes in four sizes ranging from 475 ml to 1600 ml. No gasket seal, but I figure on using electrical tape or something to guarantee watertightness. I'm in the process of making a daypack kit based in the 1100 ml one. The 475 ml one seems small enough to fit in a waist pack of some sort (something larger than yer standard skinny fanny pack).
The closest thing I found to pocket-sized metal that seals is the MSR Stowaway pot http://www.rei.com/product/401131 , which comes in four sizes ranging from 475 ml to 1600 ml. No gasket seal, but I figure on using electrical tape or something to guarantee watertightness. I'm in the process of making a daypack kit based in the 1100 ml one. The 475 ml one seems small enough to fit in a waist pack of some sort (something larger than yer standard skinny fanny pack).