Place marshmallows and coconut oil or butter in medium saucepan over medium-low heat. Stir until melted; remove from heat.
Stir in shredded coconut and candied ginger. Mix well.
Spray hands with nonstick cooking spray, then scoop up one tablespoon of popcorn mixture.
Roll mixture with hands to form a ball. Place ball on baking sheet lined with parchment paper or foil.
Repeat to make 36 balls.
Place chocolate in small, microwavesafe bowl. Heat in microwave on HIGH for one minute, until melted. If not completely melted, microwave for another 15 seconds and stir again.
Stir 1 teaspoon coconut oil into melted chocolate.
Place chocolate in zipper-style plastic bag and seal. Snip off a tiny corner of bag.
Pipe chocolate on popcorn balls in a decorative pattern.
Garnish with extra shredded coconut and extra minced candied ginger if desired.
Place truffles in a cool place until chocolate is set.
