Housemates have one-by-one been called to the Diary Room where they will be faced with a large biscuit tin on the table.
Without being able to see what is inside, each star will decide whether they want to reach into the unknown, with a different surprise added every time.
However, Channel 5 viewers will be able to see the object or creature inside the tin.
The tin will have a Perspex window so that viewers will be able to see what surprises lurk inside while housemates reach into the unknown.
Brave housemates will be rewarded with a small cake in 'Risk It for a Biscuit'.
Big Brother continues tomorrow night at 10pm on Channel 5, as Arron Lowe and Chris James face eviction from the house.