Why did Santa's elves have trouble with the new adjustable desks in the workshop?

They just couldn't quite elf-adjust.

What do you call a Christmas tree that's a professional musician?

A treble-maker.

Why did Santa's elves start a union at the North Pole?

Because they wanted to Claus for better working conditions

What's Santa's favorite kind of coffee?

Decaffeinated. He gets enough 'jingle' all night long, and needs his *Silent Night*.