For those of you who don't know what a flash mob is, its an event that happens with a large group of people who meet in a public spot and do something completely odd, strange, or otherwise attention grabbing. I'm looking for some ideas on an event here where I live for November 14 (its an organized date).

I'm looking for some ideas for what to do. Some past ideas that have happened are everyone wears funny hats/costumes, dances to something, pillow fight. Last year everyone dressed in hunters' orange. On my list so far, I am considering is for everyone to bring music playing devices like boom boxes, cassette decks, 8-track players etc (the older the better) and have everything playing at once. Another idea mentioned to me by someone else is a mock funeral.

The idea is to have something weird and stand out, but not interfere with non-participants other than get blank stares and WTF's and of course be legal. Can anyone provide any other unique suggestions?

Mass picknic.

All taking cellphone and call people and talk realy loud.

Mass photoshoot/session