Question: what to do after maxing out 401k?
Answer: Invest in a Traditional or Roth IRA. Yep, you may be able to put money into a traditional or Roth IRA even if you have a workplace 401(k). ... 
Convert Old 401(k)s to Roth IRAs. ... 
Put Money Into Taxable Investments. ... 
7 Questions to Ask an Investment Professional.