Dji Neo Freewell ND Filters Repurposed

I’ll admit that despite some years with various drones, I’m still guessing on which ND filter to use, I think I may have a solution for my frustration. While at the opticians and as all who wear glasses know how they have different strength lenses on a fob to determine the best lens.

Sooo thinking out loud it occurred to me how it might be a convenient way to determine which filter by holding it up against the camera lens without having to actually mount it.
I’ve tried that before but my fingers are always in the way. Today though I engaged the thinkign matter and came up with this Fob that utilizes the Neo’s filters..

The Fob.

Fob housing and Lid

Fob

Good for both Neo and Mini 4 Pro especially Mini 4