Double, double toil and trouble;

I love Shakespeare so I thought I would take part in this challenge. Of course I forgot about it being April Fools´ Day so my blip is not about Trinculo but the witches of Macbeth. Thought my husband´s ancient cement mixer could double as the witches´ cauldron - it is probably as old as theirs

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

Macbeth