Here is a piece by Carolyn Bigda of the Chicago Tribune which covers the spousal IRA, which allows couples to contribute to an IRA account, even though a spouse may not have earned income (earned income is a requirement of making an IRA contribution in all other cases).
Depending on your tax strategy and income, this could be a deductible IRA, a non-deductible IRA, or a Roth IRA. Carolyn's piece covers the phaseout levels which help to determine which may be appropriate.
