8 Persian cucumbers, chopped
2 jalapeño peppers (seeds removed for less heat), chopped
2/3 cup sugar
1 cup plus 2 tablespoons fresh lime juice (from about 10 limes)
1 teaspoon ancho chile powder
2 cups lemon-lime soda
Gummy eyeballs or worms, for garnish
For a grown-up punch, use gin instead of soda. Finish with just a splash of soda to sweeten.