I read over on Reddit that a flashmob is planning to leave out crumpled sets of clothing (shoes, pants, shirts) to look as though people were raptured here and there on Saturday.

Imagine thinking you'd been left behind on May 21, when you were SURE you'd be raptured.... "OMG, here's some clothes left by an ascended woman! I'm left behind! I'm one of the cursed heathen! HORROR!!!"