The Ohio CollegeAdvantage 529 college savings plan is offering a $25 matching contribution if you open a new account and invest at least $25 of your own money. No promotion code required. Expires April 30, 2011. (Update: This offer is now expired.) A little kick to get started. Set up an automatic contribution of as little as $25 every month and you’ll barely notice it.
If your in-state plan doesn’t have good tax benefits, I would recommend looking plans with low-cost investment options such as the Utah and Ohio plans (really anyone that offers Vanguard investments). I like Ohio specifically because they offer good investments that suit my preference for very conservative investments for college, including high-yield CDs and inflation-indexed bonds.