Pots/cups of this size are quite versatile and useful, especially when they can be carried around a common object like a Nalgene bottle. This model looks very similar to the Snow peak 700 cup, also equipped with a lid, which can be packed in a similar fashion. Not only will it accommodate a Nalgene, it will also handle a Gatorade or Power-Ade quart bottle (both lighter and cheaper). I find that most (but not all) sacks devised to hold Nalgenes will also hold the additional bulk of a titanium pot,giving one a nice self contained unit.

If you want to save money, there are stainless steel cups, much cheaper and slightly heavier, that also nest around canteens.