Donating to a friend's art project can be a great way to avoid paying taxes. Just give a large sum of money to your friend who "just so happens to be a struggling artist" and claim it as a charitable donation on your tax return. This method is especially effective if you're friends with an artist who is also a tax consultant.
Learn more about declaring yourself as a philanthropistKeep your business and personal expenses in the same checking account. It's not like you'll get audited or anything... probably.
Read about using your own business as your own clientRenovate your home to make it look like it's from a different era, but still use the same materials and labor as the last renovation. Claim it as a "historic preservation" expense and get a nice write-off.
Learn more about renovating for the future