Something for Halloween...

A dark cave. In the middle, a boiling cauldron.
Thunder. 
Enter the three Witches

First Witch 
Thrice the brinded cat hath mew'd.

Second Witch 
Thrice and once the hedge-pig whined.

Third Witch 
Harpier cries "'Tis time, 'tis time."

First Witch 
Round about the cauldron go;
In the poison'd entrails throw.
Toad, that under cold stone
Days and nights has thirty-one
Swelter'd venom sleeping got,
Boil thou first i' the charmed pot.

All
Double, double, toil and trouble; (10)
Fire burn, and cauldron bubble.

Second Witch 
Fillet of a fenny snake,
In the cauldron boil and bake;
Eye of newt and toe of frog,
Wool of bat and tongue of dog,
Adder's fork and blind-worm's sting,
Lizard's leg and howlet's wing,
For a charm of powerful trouble,
Like a hell-broth boil and bubble.

All
Double, double, toil and trouble;
Fire burn and cauldron bubble.

Third Witch 
Scale of dragon, tooth of wolf,
Witches' mummy, maw and gulf
Of the ravin'd salt-sea shark,
Root of hemlock digg'd i' the dark,
Liver of blaspheming Jew,
Gall of goat, and slips of yew
Silver'd in the moon's eclipse,
Nose of Turk and Tartar's lips,
Finger of birth-strangled babe (30)
Ditch-deliver'd by a drab,
Make the gruel thick and slab:
Add thereto a tiger's chaudron,
For the ingredients of our cauldron.

All
Double, double, toil and trouble;
Fire burn and cauldron bubble.

Second Witch 
Cool it with a baboon's blood,
Then the charm is firm and good.

[Enter Hecate, to the other three Witches]

Hecate
O well done! I commend your pains;
And every one shall share i' the gains;
And now about the cauldron sing,
Live elves and fairies in a ring,
Enchanting all that you put in.

[Music and a song: 'Black spirits,' etc, Hecate retires]

Second Witch 
By the pricking of my thumbs,
Something wicked this way comes.
Open, locks,
Whoever knocks!