The education fund is key. We put away money for our two kids, and the oldest has taken 1 year out of it. We have enough for 5 years of Canadian university between them (double that if they choose college instead)
We've always been fortunate to have decent jobs, but feel like the wealthy class when we can just fund their tuition like it's nothing
We put away $200/mn into a couple of Scotia accounts. I wish now I ran it myself and just put it into S&P ETFs, but it still worked out well enough