The best designs are the ones that make you say "I wish I'd thought of that!" They are also usually dead simple, and probably quite a bit more subtle than they appear. The Press-Bot coffee maker is all that, and it makes good coffee too. Camp coffee is always great, but coffee made from grounds in a French press is wonderful. Since the Press Bot operates with a standard 1 liter wide mouth Nalgene bottle, that means you can make enough great coffee for three or four people at once, so it is also a very efficient method. This summer I was at Kane Lake in Idaho teaching my son to fly fish, sitting on a rock having a great cup of coffee. It doesn't get any better than that. This little gadget weighs only a few ounces, and I carry a Nalgene bottle anyway, so it is very practical even for ultralight hiking.