http://www.rei.com/product/750397/gsi-outdoors-h2jo-coffee-filterThis is what I do. I dump the coffee into the filter and screw it into a Nalgene bottle that I have filled with water just off the boil. I screw on the cap, invert the bottle and wait about five minutes, shaking the bottle periodically. Open the bottle, remove and dump out the filter and I have a quart bottle full of good, hot coffee. More compact and less fussy than the drip filters, or the french press for the Nalgene bottle that I used to use.
PS: I forgot to mention that after I clean the filter and bottle, I install the filter back into the bottle and fill it up with water to drink on the trail. This way, the filter takes up no extra room in my pack and is protected from damage. Even though I usually use a hydration bladder in my packs, I usually take one Nalgene with me as well. Easier to hand a bottle to people who have run out of water, or if I need to filter/treat water on the trail.