You need: Candy Melts (or chocolate), sprinkles, candy eyes and plastic disposable spoons.
I'm one of the few people who do not own a microwave so melting candy melts is a bit long winded. I boil some water then place a heat proof bowl on top of the saucepan and let the bowl get heated by the steam from the boiling water.
Your supposed to add your melts to the heated bowl with the pan off the heat but I always do it with the heat on and I always add a little trek (white vegetable lard).
Fill each of you spoons with the melted candy and leave them to cool slightly so that the top is still slightly soft but not runny enough to pour out. You'll need to prop the handles off the spoons off the counter to keep the candy melt level, whilst it cools in the spoon.