2 cups chocolate chips
2 tablespoons vegetable oil
Assorted toppings for coating bananas (such as crushed oreos, toffee bits, chopped Butterfinger candy bars, chopped salted peanuts, or toasted shredded coconut)
3 bananas, peeled, cut into 1/2-inch-thick slices
Stir chocolate and oil in heavy small saucepan over low heat just until smooth. Let stand 15 minutes to cool.
Place each topping in separate shallow dish. Line baking sheet with foil. Arrange banana slices on foil. Using fingers, dip 1 banana slice in chocolate, coating completely. Shake off excess chocolate. Drop dipped banana in 1 topping. Using clean hand, sprinkle more topping over banana to coat; transfer to foil-lined sheet. Repeat with remaining bananas, chocolate, and toppings. Freeze until firm, about 3 hours, then serve.