OnePlus One, the flagship killer, as they call it, is a beast with amazing performance, speed, has amazing specs and all. Besides this, it's powered by CyanogenMod 11S, which brings us some more stuff like new camera, gallery and comes with Themer. Other words, it's even more customizable than CM11 is. Now, as you might expect, this all new stuff has been ported and is now available for every other Android device!
Currently there are six things ported:
I am personally very comfortable with using the CM camera, it has a lot of settings, nice interface and unlike Google camera it contains time lapse feature.
To install the APK's, simply download them and install them as user apps. No root access is needed.