Do you own your own home? Rent out a portion of it. Items that are not deductible on your tax return normally, like home owner's insurance and mortgage interest, become tax deductible on a pro-rated basis (according to the percentage of your house you have rented out).
I do taxes seasonally for H&R Block...most of my clients in this situation lose money on paper on the rental, lowering their overall income, even though they cash a check from the tenant every month.