If you want System/stock apps of Blackberry Priv and run in any other lollipop powered device like Samsung,Motorola,Sony,etc.then you can download those apks for eg Launcher,Keyboard,services,calendar,hub and install it in your device.
Thanks to XDA dev Xaiux for providing list of working apps download links of Blackberry priv ,You can download all the apks from the links given below.
#Download Blackberry Priv (Venice) System apps
1.Blackberry Priv Services.apk
Its is required to be installed first in order to run any other blackberry apps(Launcher,keyboard and Calendar)
3.Blackberry Priv Launcher.apk
Blackberry Priv runs on android lollipop where as its launcher is completely different from lollipop as it based on android marshmallow that is vertically scrolling.
4.Blackberry Priv Calendar.apk
The calendar on Blackberry priv is similar to their calendar with some minor UI and Design change in it.
#Some other Apps of Blackberry priv are-