For regional effects, perhaps everything in the region seems to feel lighter (or heavier, your preference; or both intermittently.) Jumping, lifting, carrying: it all feels floaty.
And perhaps there are occasionally pockets of anti-gravity, where small areas of objects slowly float upward.
Maybe...
Charlatan, eh?
Start a church. Tithe heavily, highly encourage extra donations, convert the flock.
As a bonus, open a confessional service to gain juicy information and become an information broker and/or extortionist.
Just don't cross the wrong god.
Good point, I can think of a couple scenarios and I guess it depends on how much time you're looking to spend on it.
a) It could be that the tree ceremony has yet to be performed because they're missing crucial materials (a surprise early winter storm blew through and they were raided by the...
Building off Rya's mention of trees and making something up-- a coworker was rambling yesterday about Christmas trees being decorated to ward off evil spirits and whatnot. True or no, it's a good jumping point for an idea: a village where they celebrate a holiday festival/ritual in order to...