Cockfights
Pretty simple, place bets and watch a couple birds fight. Maybe using a local referee/bookie, or we could have our own fightin' cocks. Whatever is easiest, the important thing is gambling on chickens
Think of it like Pokemon for country folks, a lo-fi alternative to the casino with unique smells & better puns.
I know of a fun and non-controversial way we can do this. I don't want to post my method, but I will add it to the list.