I know this is an old thread but I am looking for a tiny case for Tello too - holds Tello WITHOUT prop guards and nothing else. Something similar to PolarPro's case for Spark would be ideal.
Here's the Spark case
I already have a Tello case that holds the drone, controller and batteries. I want a tiny case to put in a bigger backpack case with my other 2 drones - Spark and P3S.