Masters of Brickjitzu was just onboarded as a new recognized community on the LAN and their Ambassador shared this awesome documentary: Ninjago - 10 Years of Spinjitzu.
It provides some neat background info about how the theme Ninjago was first started, how it was developed into a TV show including interviews with the actors, directors, and the composers. The composers even show all the cool instruments associated with each character. It's a bit long but super interesting and definitely worth watching (maybe split it into 2 sessions). Enjoy!