Creative, Pretend Potion Recipes?

Hi =)

I really need some help creating pretend/Halloween "potion recipes" for a party I'm planning. I'm going to print fake recipes and decorate with them. These pretend potion recipes need to be made from "creepy" and both real/pretend(magical) ingredients. (The creepier, the better... haha)

Can you help me come up with some good ones (that COULD make sense...)please?

ie, a DREAMING POTION might have:

___ amt of Nighttime Air

___ amt of Pickled Spider Legs

___ amt of Elixir of Moonstone

etc..

or a LEVITATION POTION might have:

___ amt Phoenix Feathers

___ amt Dragon Scales

___ amt Hellfire

etc...

(these are just rough brainstorms as examples =))

As many as you can come up with!

Thanks! =D