As mentioned, XI did this with player bazaars and 1.0 did this with the market ward. Neither one was very enjoyable to work with. And at least in my opinion, there’s nothing that seems very immersive about becoming a glorified vendor while you’re AFK. You would be better off requesting cushions and carpets that can be used like the parasols and just advertise and sell your wares manually (and probably limit their use to certain areas to prevent people from doing things like carpet-crowning market boards).