Halloween Witches Brew Green Slime Drink Mix in Cauldron Target's Halloween Witches Brew Green Slime Drink Mix in Cauldron ($8) is the perfect thing to brew up during a movie night with friends or on your own! The kit comes with a black cauldron and the drink powder mix. Image Source: target.com Halloween Witches Brew Green Slime Drink Mix in Cauldron $8 from target.com Buy Now