Here's a few more that I write off:

Security system & monitoring
CCTV system
Sattelite radio receiver (for use at work)
Satellite radio subscription
Ghetto blasters (for use at work)
Business use of personal vehicle
Cleaning supplies for vehicle
Parking fees
Disposal fees
Electrical permits
Meals
Company functions (eg Xmas Party)
Hearing tests
Asbestos testing
Internet
Other office supplies (coffee machine, coffee, fridge, microwave, etc)
Insurance deductables




Sixer

"Will it be cheaper if I drill the holes for you?"