I use a stainless "Tea Ball" filled with grounds and let it sit in a stainless cup and simmer a few minutes over a penny stove.

The stainless cup is not light, so it can't qualify, but the tea ball works really good, and it can't weigh much, so I offer it to those who, like me, don't like chewy coffee.

I always grind some Eight o`Clock French Roast beans and put them in a baggie before I head out. I ain't givin up good coffee when I'm camping out.