Not really a mod (compared to what other people do), but this has been really handy for me so I'm sharing the pics. I was always looking for a paper clip or tool to fix cart filler so I added a "pick" to a 2AA battery box mod I was making. I included a tube inside the case that guides and holds the pick so it doesn't screw up anything inside the case.
Materials:
Old screwdriver blade
Set screw
Nylon cap nut
Assemble, cut threads into the plastic case...and screw it in

Materials:
Old screwdriver blade
Set screw
Nylon cap nut
Assemble, cut threads into the plastic case...and screw it in

