If I wanted to continue drinking coffee while not adding some sort of animal product to it, I'd likely try coconut milk. For taking on the road, there's a powdered version explicitly for this purpose:
Coconut Milk Powder - Coconut Oil - Benefits of Coconut Oil - Dairy Creamer Alternative - Increased Metabolism - Pina Colada - Super Food - Coconut Smoothie - Coconut Drink - Coconut Creme - Coconut Creamer - Cream of Coconut
"Our Coconut Milk Powder is 70% Coconut Oil. Perfect alternative to dairy creamers in coffee! Coconut oil is burned by the body for energy rather than stored as fat. Get clean, rich coconut milk fast and easy by simply adding hot water."