I've been playing Animal Crossing a lot, and it has dawned on me that I would love an activitypub over sneakernet app for my phone. The Nearby SDK is an obvious choice, but I'd rather use an open source alternative if one exists.
I guess it would need to announce it's existence, listen for announcements, and pull feeds from nearby devices.
@polymerwitch oooh yesss like streetpass but activitypub!! this would be really neat!