For Day Fourteen of the cocktail advent calendar, I created a "Christmas Bulb." Every Christmas tree I've ever decorated has some collection of these classic ornaments, so I wanted to turn it into a cocktail. I made an ice sphere to hold the cocktail, and even added the hook for decoration.

For the drink:
-1 oz tequila (Cazadores Blanco)
-1 oz triple sec (Cointreau)
-1/3 oz lime juice
-1/3 oz simple syrup
-1/8 oz crème de menthe (De Kupyer)
"Glassware":
-Four hours before you plan on making your margarita pour water up to the fill line in the ice mold and place it in the freezer.
-Remove the ice molds from the freezer. Make a hole in each ice mold and pour out the water. This can be done in two ways. 1) Take a meat injector and heat the tip with a lighter. Slowly push it through the mold and withdraw the water. 2) Take a small steak knife, heat the tip with a lighter, and slowly push it into the ice twisting gently to make a hole (you may need to reheat the blade a few times). Pour out the water in the middle.
-If you want to suspend it with a hanger, heat a sewing needle and make another hole half an inch from from larger hole.
-After draining the water from the center of the mold put them back in the freezer while you make the drink.
-Pour the drink ingredients in a cocktail shaker, fill three quarters with ice, and shake for 5-10 seconds.
-Remove the empty ice spheres from the freezer. If you have the meat injector, use it to inject the drink into both spheres. If you used a knife to make the hole, pour the drink into a liquid measuring cup with a spout and carefully pour into the mold.
-Insert a straw and enjoy.