The raspberries and blueberries can be washed and dried. You don't have to cut them in any way.
Peel the kiwis and slice them into quarters. Depending on the size of the kiwi, you may want to slice them into smaller pieces. Each piece should be roughly 1 inch in width and length.
Cut the watermelon into thirds. Wrap the remaining watermelon and store it inside the fridge. Peel the remaining third. Then, cut the red flesh into 1-inch cubes. set them aside.
Repeat the same process for the cantaloupe melon as the watermelon. Cut the flesh into 1-inch cubes.
Next, peel the mango. Then, cut the flesh off the pit. Portion the pieces into roughly 1-inch pieces. They should be the same size (more or less) as the rest of the fruit.
Then, you don't have to peel the peaches, but you can if you don't like their skins. Cut the flesh away from the peach pit. Then, cut them into 1-inch cubes.
Finally, peel the bananas and slice them into 1/2-inch slices.