Searching for options for good investments!!!

Hi everyone, I have a few months left in my company before I retire ?. and I would like to know about the options that I can consider for my retirement plan. I am taking about some real good investments so that I get my future secured (want it secured for the kids too). I have a few options that I can look up to like REI, mutual funds and stocks?..but need a bit of advice from you to make a better decision.