I can think of two things wich might qualify, depending on how much durability you need. The more durable option is the snowpeak titanium bowl, wich weighs 1.7 oz and has a capacity of 20oz. and could be fitted with a foil lid to make a sub-two ounce cook pot. The lighter option that I know of is to take a Fosters 24oz keg dan and cut the top off to make a container of around 20 oz and use a foil lid or possibly the bottom of another can. I think that set up would be around .5 oz without lid. However it would be so flimsy I think it would be difficult to pack witout crushing it. Or if volume is not an issue you could use a tea lite container, wich probably weights 1 or 2 grahams.