Seasonal fun on the last day in the office

We work hard and play hard in the PGR office.  So, the last day before the break consisted of: some work, desk picnics, a drink in the Student Union Bar at lunchtime, some fiendish quizzes, Secret Santa and the 'make a decoration' competition out of no more than 2 sheets of A4 paper without consulting the internet.

This is my colleague Kate's creation, which was the winner.  The prize being a bag of chocolate.