Potions class takes place in the Hogwarts dungeons, but despite the dark and dingy setting, you can learn a lot of very useful things from these bubbling concoctions. You'll obviously need a cauldron and a set of ingredients to create your elixir of choice, with so many amazing potions to be learnt about. Professor Severus Snape says it best himself: 'I can teach you how to bottle fame, brew glory, even put a stopper on death.' Although sometimes, you might just need to brew a potion to cure boils.