Melt white chocolate by using a double boiler or microwaving in a microwave safe bowl in 30 second increments stirring in between cook times. Do this until bark is smooth and melted.
Use a spoon to place a bit of the melted chocolate into each silicone mold hole. Smooth the chocolate up and around the edges. Place in the fridge for 10-15 minutes to set.
Spoon a little more melted chocolate into the hardened chocolate in the mold. Spread it around for a second coat. Chill for another 10-15 minutes.
Carefully remove the chocolate shells from the molds. Microwave a small glass plate for 30-45 seconds. Set aside. Take a shell that has been removed from the mold and place on the warm plate on the open end to smooth the edges. Do this for half of the shells.
Fill half of the shells with 1 tablespoon of hot chocolate mix, assorted sprinkles, pinch of edible glitter etc....
With the remaining half of the shells take each one and place on to the warm plate to lightly melt the edges. Immediately place the top shell on the filled shell.
Use your finger to smooth the seam. YOu can use now once the middle seam is hardened or continue to decorate the outsides.
To decorate outsides: Place your pink candy melts in a small microwave safe bowl and microwave in 30 second intervals stirring in between until melted.
Repeat with the teal candy melts. Drizzle the pink and teal chocolate over each bomb and immediately decorate with candies and sprinkles.
Serve in a mug, pouring hot milk over the bomb and stirring until completely melted. Drink!