While cleaning out the basement, I found a toolbox that I haven't opened in probably 30 years, and it contained some items that I know were originally my father's, so these things could be 75-100 years old.
This guy is about 2.5" long, we wondered if it was like a nail set but the head shows no hammer marks:
This one is about 4" long, the best part is how the crossbar is held on with what I suspect is a decades-old band-aid:
But then this is our favorite, it's also about 4" long. The "top" bit looks like it would be a lid, but the inside isn't threaded at all:
Any ideas what these items are?