Treasure hunt: Claim your metal detector—searching for buried treasure is a business venture.
Poor by choice: Take a vow of poverty and you can deduct the amount of income you gave to your order.
Baby sitting: Write off your child-care expenses for a night out if you’re at work, school or “entertaining clients.”
Gambling losses: If you gamble for a living, you may be able to write off your losses as a business expense.
Banjo rental: Pro musicians can claim rental fees and insurance on instruments. Hoedown anyone?