Doing the happy dance here. I have either DMIL's or her mom's puzzle box. It must have held shuttle bobbins as where you picture the round bobbins I have 5 metal fingers that kind of look like they could hold a battery. Not that it was made for that purpose of course. It looks like everything is there except the large screw driver and the screw to hold the seem width thing in place. I also have something that looks like a long hollow needle cut on a slant with a knurled center.
piney