The nice thing about the 529 (besides some tax savings) is that it can be used for any family member, so I'm just trying to build up a big lump, and then chip away at it for each kid as needed. It's nice that I don't have to target too precisely.

Four kids, aged 13-newborn.

Also, we have a pretty structured weekly work chart where they get paid $10-20 if they do all their stuff on time and account for it each day. Mostly just so that the paper is the enforcer, rather than my wife or me. Of that amount 50% is pocket money, 10% tithing, and 40% goes to an online savings account.

If they choose to pass on some pocket money and add the amount to their savings (happens about half the time), then we have agreed to match that increase, so theoretically, they could put in over $20 a week into their online savings account. That account has their own name on it, and is also where we put in the occasional larger chunk on Christmas or birthdays. They're young enough that even generating $4 a year in interest "just for having it there" feels like a miracle to them.