Not filliments, conductors. Such as the ones running through through your home

You can build a basic radio manually with a little bit of know how. If you have spare capacitors, they’re likely to survive and be pretty replaceable. You can rig up an antenna out of any wire, it just needs to be the correct length and it’ll work to some degree.

If your entire house goes up in flames at once, well, spare parts are probably not on the table