You are not limited to investing in the 529 for the state where you live, but I think you may get other perks for sending your kids to schools in the states where the 529 is held. I believe there are state independent 529's as well.
You don't need a guy. Just do a little research on 529's in various states, and see if there's one that you like. Generally you can apply right on their website.
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has to be better than some bank savings account, right?