Add the Jell-o mix and the boiling water into a medium mixing bowl. Stir until the Jell-o is fully dissolved - you don't want any lumps!
Add in the vodka and stir together.
Push the stopper in the plastic syringes to the bottom. Then insert the plastic syringe into the liquid and slowly pull back the stopper to fill the syringe. Fill it just past the 1-ounce point.
Note: Do not put the tip of the syringe on the bottom of the bowl because it will get gunky and not look nice!
Turn the syringe upside down so that the tip is in the air. Give the syringe a flick with your finger so that the air bubbles go to the tip. Then slowly press the plunger of the syringe until all the air has escaped and the jello is flush with the tip.
Place the end cap on the syringe and store them with the cap down in a cup, large bowl, etc.
Chill for 2 hours or until set before serving.