I've searched and searched and SEARCHED, and SEARCHED for kid-friendly things to do in the city for New Year's Eve.
There isn't much, because, well... this is Las Vegas. I will tell you this - taking your kid to the Strip on New Years Eve probably borders on child abuse. Don't do it. Leave them with a baby sitter, please. Apart from the unsavory craziness, there are the crowds...and those will easily crush your children like a used tissue. Does it sound scary? Because it is.
But if you are interested in blowing a noise-maker at midnight with your kids out in the city somewhere (off-Strip), you can read about what I did find, right here. And the good new is that these are very safe options!