Well, it’s not exactly a replacement for the annual BSA popcorn fundraisers, but here in south central Kansas, we have ScoutCon, an annual event hosted by our Quivira Council that brings Boy Scouts and tabletop gaming together for a fun weekend in the fall. 2019 marks our 3rd year of ScoutCon. I’m kind of an at-large member of the event team and general programming advisor (I’m not an official Scouting leader, just one of many volunteers.)
https://quivira.org/camping-with-quivira/scoutcon/
I showcased a number of OSR games at ScoutCon I in 2017, and will again be running DCC exclusively at ScoutCon this year. Black Blade Publishing has provided a lot of support for the con, especially for the swag bags (providing Gongfarmer’s Almanacs, DCC Reference Booklets, DCC Quick Start Rules, dice, and other swag). Several other, larger, game companies also provide lots of product support: Chaosium, Steve Jackson Games, WotC, etc.
ScoutCon hosts RPGs, boardgames, card games, and a host of other Scout-related activities, along with an opportunity to attend a camping-filled weekend.
Our ScoutCon has also inspired clones. Another BSA Council, in Colorado, has been working on setting up their own ScoutCon using our programming content as a baseline.