Place about 18 tea biscuits in a sealable bag, and use a rolling pin to smash the cookies into a fine powder.
Measure one cup and place it in a large bowl.
Add the ground nuts, cocoa powder, and powdered sugar. Mix with a fork.
Pour over the milk, vanilla extract, and melted butter.
Use your hands or a spoon to mix the ingredients until you have a moist mixture.
Crush the remaining tea biscuits over the mixture, then use a rubber spatula to mix it in.
Measure one tablespoon of the dough, then roll it between the palms of your hands.
Set it on a baking pan lined with parchment paper and repeat with the rest of the dough.
Place the pan in the refrigerator for 5-10 minutes.
Pour the sprinkles and or shredded coconut into a medium bowl.
Roll the balls in the coating, then place them in mini cupcake liners or serve.