I'm due to have my first child in March, and looking to start putting money away for when they're 18 (or probably older and more responsible). As far as I can tell there aren't really any good tax-beneficial investments to slowly save? If I start with $5000 and put away $100 a week at 10% (just put it in the index) will be around $300k by the time they're 18... put this in the wife's name for tax purposes as she doesn't work right now.
Is there anything better I can do or is this pretty much the limit of my options?