Great bunch of ideas!
Maybe a trade & craftsmanship fair could be good, the traders could also have some better enchanted items available than regular stores have, to 'show off' their work. And players would get to spend something.
Full-on fair with a food stand and other sorts of stuff beside markets, ideally with zero "DM-management" necessity.
Festival map could be used, it might be a lot of fun and wholesome RP.
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Sheri's true neutral, so if there's any way she will be able to help out with the 'neutral' line mentioned, let me know.