Flash battery rapid reloader with added loop for a strap and detents on the lid to make it easier to slide. I had to pull the STL into Sketchup to mod it and it really didn't like it much... so there is a hole still near the top on the slide groove or dovetail which I can't seem to close. It still prints for me though. Feel free to fix..

also prints an extra lid for the case since you will lose it... why not have two?