I first found emme Instant Rice at Liquidation World (I kid you not). I bought two packages to try and then went on quite a quest to find them again, locally (with no success -- though I did find them in Richmond, BC at Osaka Market). Now that I know who makes them, perhaps I can convince someone here to import them.
Really, they are marvellous; about 400 calories each and maybe a bit higher in sodium than would be ideal, but oh SO tasty! All you need to add is boiling water -- they even come with a little spoon inside! The package says that the contents can be kept warm for 30 minutes, but I haven't been able to test that yet.