Some of those look very similar to a case of old leather-working tools that I found when I opened up an interior wall in our log cabin in Montana.
When I asked the lady that we bought it from about them, she said they were her husband's leatherworking tools, (50 plus year old tools) he had passed away several years prior and she had no idea how they got there. she thinks that one of his friends that was helping her Remodel and fix the place up before they sold it must have put them in there.
When I go back up in a couple weeks I will have to look at them and take some photographs