If you don't have a Nexus device but you want things to be as stock as humanly possible when it comes to your home launcher, you can have that look and style thanks to Google's third party launcher app that was introduced after the launch of Kit Kat, the Google Now Launcher. Google has just sent out an update to this launcher which finally gives users who are on devices running an older version of Android between 4.1 and 4.4 the ability to have their homescreen look and feel more like a device running Android 5.0 Lollipop. The update gives it more of a Lollipop style so if you absolutely had to have some sort of material design like features this is one way you can get them.
While having these new Android 5.0 UI style tidbits is awesome, to get them you'll also need to make sure your Google app is updated to the latest version too. That should be easy enough since it was updated over a week ago. Once that's done you should notice that the homescreen with the Google Now Launcher looks a little sweeter with more robust animations like you would expect from something on lollipop, and you can now transition back and forth between your Google accounts from the Google Now screen of the launcher, which you still access by swiping all the way to the left most panel where you'll find a new slide out screen with your account information just like you'd find inside of other Google apps like the Play Store or Gmail.
While the Google Now Launcher doesn't give you as much customization as other third party launchers like Nova, Apex and others, it does give you easy access to Google Now (the main component) and it does now let non-Lollipop devices have a little bit of Lollipop on their homescreen. It's honestly the best choice for most users wanting a stock Android look and feel, unless you're absolutely in love with the stock UI that comes baked in from you device manufacturer. You can check out the Google Now Launcher live on the Play Store now, and remember to update your Google app too if you haven't done so in a while.