Preheat oven to 375° F. Pit and halve the cherries and cut any large berries in half (like strawberries).
In a medium bowl, mix together all the berries, ginger, lemon juice, water, and flour. Transfer into a small to medium sized cast iron skillet or any oven safe dish.
In a separate bowl, stir together the oats, coconut, brown sugar, and butter. Spread the mixture evenly over the fruit mixture using a spoon.
Transfer the prepared crumble to the oven and bake for 25-30 minutes, watching closely near the end of the cook time. When the fruit is beginning to bubble and the oats are toasted and golden in color, remove it from the oven.
Allow to cool for at least 10 minutes, and spoon onto dishes to serve!