Ninja was an ammo can filled with ninja tools and weapons. It was muggled.
Ninja Redux was a smaller container hidden right here. It was muggled (most likely unintentionally). Ninja Redux could not be repaired and I had to clean up the remains. Ninja Redux has been reimagined and is now reborn as: Ninja Reductio Ad Absurtem.
Ninja Reductio Ad Absurdum, despite the name is not any smaller than it's predecessor. So if you found that, you will have an advantage in finding this.
This area is rife with muggles travelling to and from McKernan to the University as there is a crosswalk very close by. Because of this, traffic also stops right beside the cache area. YOU ARE VERY EXPOSED! However, Ninja Redux isn't...muggles may be curious as to what you're doing, but they are unlikely to find Ninja Redux unless you point it out or wave it around. Once you find it, time your container grab so that you don't expose the hide. Good luck!