I guess the “bunker” I had in mind is much more like an deep, extended basement. Normal basements require egress windows so they’re partially above ground.

I’d want a half flight of stairs down from the basement into a “fortified” room for bulk storage (paper towels, toilet paper, etc), some beds, and survival stuff. I’d be in there for the supplies anyway to keep an eye on it.

I’d also like my IT closet in an attached room…which would definitely be running Grocy to keep track of supplies because I love that sort of thing