My idea for a shopping task for Halloween week.
 

The housemates should have to put on a variety performance (all doing acts either individually or paired up?) and the headline act should be...

Yes you've guessed it! The Mysterious Marcello Spooks. Magician.

Boom!

They have to go all out with costumes and dress the house for Halloween surely.

Marcello = Magician
Khaled = Dracula
Ali= witch
Thomas = Ghost
Martha = Pumpkin
Emma = Clown
Nathan = devil
Rosie = zombie
Izaaz = Grim reaper etc