Why did the banshee go to voice therapy?

Because it wanted to learn to scream more constructively.

Why did the witch's cat join a band?

Because it wanted to be a purr-cussionist

Why did the mummy get so frustrated with his new smartphone?

He kept trying to 'un-wrap' the screen protector, but ended up unraveling himself!

Why did the werewolf go to the post office?

Because it needed to paws for a stamp.