Melt the caramel candies with some of the coconut water. This should take only a couple of minutes.
Brown the pineapple rings in a pan. Cut the pineapple into smaller pieces and add to the caramel sauce.
Heat a scoop of the marshmallow fluff, adding a splash of coconut water to thin the marshmallow.
Combine the marshmallow with the crushed graham crackers. Add pineapple juice or coconut water to the mixture until you get a consistency with which you can mold.
Mold the graham cracker mixture into greased muffin tin to create small cups. Pre-bake the "cups" in a 350-degree oven for 10-15 minutes.
Spoon the pineapple and caramel sauce mixture into the pre-baked graham cracker cups. Bake for another 10-15 minutes or until the graham crackers begin to brown.