To 529 Plan???:
I agree with the latter comment that your question deviates a bit from the original post however a quick comment.
Our experience, albeit from 7 years ago, was that saving money for your children in their name(s) was not always the best strategy since most universities' Financial Aid offices, and I believe the FAFSA form / format, suggests that ~90% all monies saved in a child's name be "counted" to be used to pay college costs whereas only a smaller percentage of the parents savings are "counted". In other words, if you've saved $10,000 in your childs name the college calculates / expects that you have $9k to pay for college costs whereas, if you have $10k in your (parents) name the college calculates / expects that ~$5k (or some other smaller amount) be used to pay college expenses. The delta (actual costs minus whatever you've saved) is what the college will provide in terms of a Financial Aid package (loans, grants, scholarships, work-study, etc) so, the less you have saved, theoretically, the larger the Financial Aid package which can include grants, etc.
Anyway, I am certainly not suggesting that you save nothing so the Financial Aid package constitutes 100% of the actual cost of attendance, but I am saying that, as I remember, opting to save children's college costs in the parents name, instead of the childs, was worth considering in the "old days".
Either way, you are on the right track by saving something and your children will be far better off (not having to shoulder significant debt as college costs continue to climb), and I trust quite thankful, when they find out what you've done to help them out. Keep up the good work.