Line a small sheet pan with parchment paper (make sure your sheet pan can fit in your freezer).Thaw ¼ - ½ cup of your frozen fruit (depending on how many drops you want to make). Using a food processor or blender, puree the fruit until very smooth. Set aside.In a small bowl, measure ½ cup of plain Greek yogurt. Add 3-4 tablespoons of the fruit puree to the yogurt (depending on your taste) and mix well.Add a drizzle of honey or pure maple syrup to sweeten the yogurt a bit if you'd like.Spoon the yogurt mixture into a squeeze bottle or small ziploc bag (snip off a small corner for piping). Pipe small drops (about the size of a dime or penny) onto your prepared sheet pan.Freeze for at least 20 minutes and up to a few hours. Remove the pan from the freezer and peel off the yogurt drops. Enjoy immediately or store leftover drops in a small, freezer-safe container in the freezer for several weeks.