I remember well the back-yard fallout shelter craze (mania?). The family that lived behind us had one. It was clearly large enough for just one family but it was considered uncool to talk about who would live and who would die. And we lived in the landing approach path to the Strategic Air Command base in Blytheville, AR. Generally considered a prime target for a Russki ICBM.
The nice folks at DinosaurGardens.com have posted some creative radio spots for Survive-All Fallout Shelters. (“Civil defense approved, FHA approved, no money down, five years to pay!”)