While I definitely recommend owning an essentials bar tools set, which includes a shaker, you can definitely DIY your own for this Pumpkin Fireball Latte if you don't though: 1. Put two glasses together and give the drink a good shake between the two cups. It won't be the same result, but it will be close. 2. Put your ingredients in a cup with a lid and shake. You absolutely do want to shake this recipe though. It's the best way to incorporate the pumpkin fully with the other ingredients and to get a more frothy latte.