How many people?
If for a few
http://www.amazon.ca/The-Coleman-Com.../dp/B001K7IDVU
I'm not a coffee drinker but my addicted friends use that.
If youre making a solo cup get the jet boil java. Coffee in two minutes.
I have one and use it for soup. Amazing as it burns in extreme cold and ridiculously fast.
http://www.jetboil.com/Products/Flash-Java-Kit-Tomato/