Never leave your desk unprotected. Your Stapler will go missing, emails read and the cherry missing of your bakewell tart. Just plug in the Dalek Desk Protector and he'll come alive with any of four typical Dalek phrases when someone comes into the vicinity of your desk. Dr Who was afraid of the Daleks, and your colleagues soon will be be.
Lights flash and 'Exterminate' etc will be heard if someone attempts to sit at your desk.