I picked up a Ti sierra cup at REI for $15. Other than drinking hot stuff, I really like them for an all-around camp dish. The Ti rig is all of 1.4oz and holds 10.5 fluid oz./310ml.
I saw one fellow walking his dog with a sierra cup tucked in his belt, with the open end of the cup against his hip and the hook of the handle under and over the top of his belt. Clever.
Anyway, the cup is bowl, food prep container, berry bucket. Could be an uber-minimal boiler on a solo overnight with a wing stove and an Esbit tab.