http://www.inc.com/articles/2003/02/25168.html
More Easily Overlooked Business Expenses
Here are some additional routine deductions that many business owners miss. Keep your eye out for them. audio -- and videotapes related to business skills
bank service charges
business association dues
business gifts
business-related magazines and books
casual labor and tips
casualty and theft losses
coffee and beverage service
commissions
consultant fees
credit bureau fees
office supplies
online computer services related to business
parking and meters
petty cash funds
postage
promotion and publicity
seminars and trade shows
taxi and bus fare
telephone calls away from the business