1. To prepare the fruit, cut the melons, pineapple, and mangoes into 1½–2 inch chunks.
2. Take two skewers side by side and thread pieces of fruit onto them. The double skewer will help the fruit stay put. Continue this until all fruit pieces are skewered. Lay skewers flat on a platter or baking sheet in a single layer.
3. To garnish, cut limes into wedges and squeeze lime juice over skewers. Sprinkle on desired amount of Tajín.

Total time: 20 minutes