Have you thought about coconut milk in coffee? It has some carbs, but not bad and the taste is really nice.

If you don't trust the store canend, there was a recipe on food network on how to make coconut milk and cream. Basicaly you roasted the coconut at 350, then shreaded the meat with a coconut grater or such, then you poor boiling water on top, let it cool a bit, and milk out the cream. After that you use the same coconut meat with more water and milk out the milk. Exact recipe should still be on the food network web site.

There is also almond milk, the recipe on this site. What making that involves is a blender and almonds with hot water

I am also learning to enjoy goats milk. It is still a bit high carb, but no where near cows milk. Having just a little here and there isn't a problem and many who can't tolerate cows milk do fine with goat. Apperently there is a hormone released by female cows that get into the milk and agitate some people.