@alahmnat
In Library Socialism the notion of Irreducible Minimum (once we understood it) really spoke to husband and me.
My Library Socialism sources say similar concepts are featured in historic and modern Indigenous cultures.
If @beep doesn't cite Irreducible Minimum directly, he describes essentially that when talking about union members having union protection (I guess with dues paid) but no other expectation.
Learning these (recently) has strengthened my belief in UBI.