Real-world hunter-gatherer societies hardly match the idyllic anarchistic fantasy projected onto them. They tend to be superstitious, and patriarchal. With explicit, arbitrary hierarchies enforced by physical violence, or deprivation.

When people discuss hypothetical anarchistic tribal societies, the first thing I think of is the parallel societies that sometimes exist in immigrant populations in the first world. They often feature hawala systems, cash-only societies, occasionally even alternate currencies. I have firsthand experience with this from my own family.