Mostly inspired by this thread: http://www.smash.org.au/forums/index.php/topic,2680.msg42961.html#new

So like...there was a cosplay flash mob some time ago right? (Sadly, I couldn't go) Let's do something like that again.

Imagine...a whole bunch of people, a whole crowd even, getting together at a designated time and suddenly breaking out into dance. Or song. Or...something. It'll be just like a musical number, but maybe a little less elaborate. This however, will require a lot of room and prior rehearsals.

Or! We could do a mass prank, whatever that could involve. Maybe something like what the Dollars do.
Maybe something like the "Save the Bunny Girl!" mission. It could be filmed as it's happening and available later to watch on Youtube. /Durarara!! reference.

Actually, that last one kinda sounds like it could be difficult to make.