Whisk together the sugar, lemon juice, vanilla, and spice powder in a serving bowl.
Add each fruit to the bowl as you peel and cut it and toss it with the sauce. Peel the kiwis and cut it into thin rounds. Peel and dice the mangoes or papayas, or peel, core, and dice the pineapple. Peel the bananas and thinly slice. Rinse the raspberries under cold water and pat d