Office Pranks

Put a mackeral in their office phone handset, or better still, near the power source in computer.

Constantly add pens to their collection.

Move their drawers around every time they are away from desk.

Fill keyboard with biscuit crumbs.

Change chair position constantly.

A thennd add another mackeral :p

most of those dont seem like pranks. closer to bullying. then again, my ideas weren't much better