I'm not currently using it daily because I don't have anyone I'm connected with that I'm not already connected with in other ways. I have gotten some friends and family to try it as a way of getting ahead of an emergency situation where communication might be spotty.
I wonder if Briar could be used in a geo-caching/scavenger hunt/walking tour type game, where Briar nodes are set up with Bluetooth broadcasting and players could physically travel to the locations to learn something about the area or pick up a 'flag' (like photos or something) and possibly even have a forum set up where players could leave selfies or their own photos. That would be a lot of fun.