There have been a couple of BOOM swaps. I don't remember when the next ones will be. You can read about the most recent ones at
Boom 28 Pumpkins and
Boom 28 Holly
I think there was a round robin a couple years ago, but MonaG hasn't been on QB for about a year.
Fall Round Robin Group B is open until 10/1/21
Janey - Neat people never make the exciting discoveries I do.