This is my take on a very compact bit holder for Parksides cheap mini-ratchet. The fit is rather snug and is not really designed to be ergonomic, but to be as small as it possibly can.
It can be printed without too much effort, and you can slightly adjust the scale +-2% for the parts to fit perfectly on your printer. I did mine with PLA, and so far is holding greatly.
The author marked this model as their own original creation.