I've been taking a 4-cup coffeemaker in my carryon. I always leave it with either a maid or anyone who needs one. I also bring extra filters since the small ones are harder to find in Jamaica. I can always find a coffeemaker for around $14 to $20 at Walmart or any other discount store. They don't take up much space if you take them out of the carton. I wrap a towel around the carafe to give it some extra protection.
On the way from the airport we pick up ground Blue Mountain coffee and Sangsters rum cream.
Marley9808, I totally agree with you on the Mountain Peak instant coffee. That's what we used on our very first trip to Jamaica in 1990. It was surprisingly good.