Watches, wines, designer anything not made by AI. Check out episodes of Star Trek: The Next Generation with regards to exploration of ideas of value when goods come out of a replicator and experiences out of a Holodeck at zero marginal cost.
Perhaps 'The Neutral Zone' season 1 episode 26. There is a cryogenically frozen person brought back to life, and he is obsessed with finding out about the value of his stock portfolio, and he and Picard have a conversation about how money no longer exists.
But I don't recall any episode that really explores the idea of a post-scarcity world (which is essentially communism I suppose)
Watches, wines, designer anything not made by AI. Check out episodes of Star Trek: The Next Generation with regards to exploration of ideas of value when goods come out of a replicator and experiences out of a Holodeck at zero marginal cost.