26 in Blue glass bottle with stopper

A small cross made of copper, it's in decent condition but not fully restored, could it be 200-500 years old? I think you can still wear it if have a string or something like that. It was found either in a Ukrainian forest or maybe near a church (Not quite sure).

I think it's all vintage from my mom's collection. Just looking to see if any of it is worth anything.

6 tie taks or bars my 86 year old father collected over the years.

This was my grandfather's. I'm not sure what it is. Looks to be a bottle opener and box cutter, or maybe letter opener.

Old foldable ruler from the 60s? Just a guess on age. This was my grandfather's that was given to my dad over 40 years ago and sitting in a box.