Line a plate or baking sheet with nonstick aluminum foil. Push an ice pop stick in the center of each piece of banana, but not all the way through to the end. Stir the jam to loosen, then brush it all over each banana. Place the bananas on the lined plate and freeze until solid, about 2 hours.
Line another plate with nonstick aluminum foil. Pour the ice cream sauce in a coffee mug or small bowl. Remove the bananas from the freezer and quickly dip each in the ice cream sauce to completely coat. Before the shell forms, place the banana on the newly prepared plate and sprinkle each with one of the toppings. Freeze until solid, 5 to 10 minutes.