Millennials, as a generation, have had a tough go, financially speaking. Older millennials graduated college right in time for not just one, but two recessions. Throw in high levels of student debt, stagnant wages, and raging inflation, and it's a small miracle millennials have retirement savings at all. But as of last year, millennials had an average 401(k) balance of $67,300, according to Fidelity. That's not a huge amount of savings per se. But it's also not dire at all. Where to invest $1,000 right n ...