Hmmm...if the recipe is okay with less fat in it, the rice milk might work. I use soy, but not sure if you want to go that route. It doesn't work as well as milk in some things, but only where you are needing the fat to make it work (like pudding!) I know coconut milk is a good one too, just can't find it locally.
I can get vegan margarine here...is that available anywhere for you?