Put one spoonful of the melted chocolate into the mold and using the back of your spoon, spread out the chocolate and up the sides.
Let chocolate harden for 2-3 hours and speed it up by putting it in the fridge. Once set, take each piece out of the mold.
Add in some of the hot cocoa mix and some of the marshmallows and sprinkles.
Melt the green and red chocolate according to what it says on the package. Put the melted chocolate into piping bags. Drizzle on top of the bombs. Sprinkle on the sprinkles.
Once ready to use, put the chocolate bombs in the bottom of your mug and pour 1 cup of hot milk over the top. Once melted, stir.