We have this hint on ninja preparedness from Dwight Kurt Schrute, Chairman and Founder, Lackawanna County Ninja Preparedness Council (via War on Folly) (emphasis added):
Whether it is a throwing star to the neck at a bowling alley, a poison spike that sails through an open window and lodges itself in the fleshy part of the leg, or a mysterious black-clad figure with a bo staff, perched up on the ceiling of your garage as you pull in your car from your awesome job, ninja attacks can and will happen anywhere and anytime…
Things to remember:
Check ceilings first, when doing your safety inspections, that’s where they like to ‘hang’.
Ninja Laptops and OLPC Mesh Network picture by Jessamyn West