Take Heed
One office worker took passive-aggressive notes to the next level by making a literary reference. They printed an extract from the Harry Potter novel series and added a threatening image of the boy wizard. This poem comes from Gringotts, the wizarding bank, where goblins protect hordes of gold.

It’s also a creative way of telling people to keep their dirty paws off their colleague’s food. Nobody likes an office thief but it’s amazing what folks will attempt if they think that nobody is watching. Perhaps Harry will put a curse on them if they snatch that leftover candy bar or drink that smoothie (via The Mirror).